Sunday,  April 8, 2007                                           Vol. IV No. 7 
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Welcome to the Over the Airwaves aviation journal.  This complimentary bi-weekly e-mailing is being sent to pilots and aviation enthusiasts around the world.  Its aim is to promote flight safety, encourage students and new pilots, and to build enthusiasm for aviation in general. 
 
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"Flying alone! Nothing gives such a sense of mastery over time, over mechanism. Mastery indeed over space, time, and life itself, as this."
— Cecil Day Lewis

Dear Pilots and Aviation Enthusiasts:      

Those Simulation Blues!

Paradoxically, advancing aviation technology is quickly turning today's pilots into button-pushing cockpit automatons who one day will not know the difference between a departure stall and a reset button!

Marketing to the masses, factory training departments tell us to climb aboard their newest creations, activate an electronic checklist that self-tests each major aircraft system, then it reminds us to fasten our seatbelts.

"Hey . . . anybody can fly these airplanes," goes the hype!

The worst manifestation of advancing technology is emerging in the lowly flight school.   Once a place where weather-beaten freight dogs passed on their hard-earned lessons learned to curious students, many of today's flight schools are quickly becoming darkened rooms where "make believe" cockpits are fashioned out of computer screens and keyboards.

Don't get me wrong.  I have great respect for the use of flight simulators to walk primary students through VOR orientation exercises and instrument students through the delicate art of negotiating their first few instrument procedures.   These devices are also useful in teaching advanced instrumentation and avionics such as RMIs, HSIs, Flight Directors and GPS.  

Beyond that, I believe these "make believe" cockpits to be mis-used convenient alternatives to enduring the hassles, discomforts, and risks of conducting real world flight training.  And let's not forget that these "make believe" cockpits offer a far better return on financial investment to their flight school owners than real airplanes!

Fortunately for the good guys, FAR 61.65(e) limits the use of flight simulators to 10 or 20 out of the required 40 hours required for the instrument rating.  This means that the instrument student must actually fly a real airplane for a minimum of 20 to 30 hours in either simulated or actual instrument conditions.

Enter the View Limiting Device!

Eventually the primary and instrument student pilot must get into a real airplane for the balance of his or her training.   But there is nothing in the FARs that requires that this "real" training be conducted in anything other than clear skies and calm winds.

Thus, the weather-adverse instructor is permitted to simulate instrument conditions by permitting the student to wear a view limiting device to keep the hapless student from "peeking" out the window (chuckle, chuckle).

Putting it all together . . .

Imagine, today's emerging GA pilots learn to fly in highly automated airplanes with skills learned in "make believe" cockpits, and whose aeronautical decision making talents were honed in sunny skies while under a $30 pair of foggles.    Don't worry.  Make a mistake?  Simply pull the ballistic chute handle! 

Hmmmm . . . anybody know where we are supposed to place our feet?

No, I am not arguing against improved technology in the cockpit or reducing training costs through the use of simulators.  But we cannot sacrifice what can and must be learned in real world flight operations.

The difference between simulated and real IMC is like comparing a video game to driving a Formula I race car at the Indy 500.   In truth, there is no comparison!

So when it is time for recurrent training, don't be duped into simulated flight, whether in the box or under the hood.  Get out in the actual stuff where the challenges are real and the decisions you make are lasting! 

Fly safe,

Bob Miller, ATP, CfII
rjma@rjma.com
716-864-8100

 

The Stark Reality of REAL WORLD Flying!

This is a tragic scenario where a 700 hour Cirrus SR22 pilot and three passengers failed to make it to their planned destination of Mooresville, North Carolina.   

The pilot received a full weather briefing from the St. Petersburg, Florida FSS.  The briefer assured the pilot that he would encounter VFR upon his arrival.  The ceiling was forecasted to be between 2,500 to 3,000 feet with rain showers.

Upon reaching Mooresville, the pilot discovered that the VFR forecast did not hold up.  Instead, the ceiling and visibility had deteriorated to 200' overcast, 2 miles visibility, and mist.   Thus, the pilot requested vectors to Statesville, NC where he was eventually cleared for the ILS runway 28 approach. 

No further transmissions were heard from the pilot.

NTSB Report Witness Statement:

"Witness stated the airplane was observed on approach for runway 28 at Statesville Regional Airport. The airplane came out of the clouds in the vicinity of taxiway D and continued over the runway to taxiway F."

"An increase in engine power was heard and the airplane started a right turn and entered the clouds. The airplane was heard north of the airport and was observed again on the south side of the runway traveling from southeast to the northwest located just below the clouds, and crossed runway 28."

"The airplane entered the clouds and came out of the clouds north of Aviation Drive. The witnesses observed the airplane make a sharp bank to the right estimated at a 45-degree angle of bank followed by a 45-degree left bank."

"The nose of the airplane was observed to pitch down and the airplane collided with trees and the ground."
 

The main wreckage of the airplane was found in a wooded area adjacent to the airport in a ravine on an embankment.  Examination of the crash site revealed the airplane collided with 75 foot tree tops in a nose down, left wing low attitude. The crash debris line was 166 feet long. 

The pilot and one passenger survived.  The other two passengers died in the crash.

Here's a little more about the pilot . . .

According to the NTSB accident report, the pilot had previously received three days of factory Cirrus SR22 flight training.  During this training, the instructor pilot wrote in his daily notes that "The pilot did not fly consistently to the performance standards. The pilot was behind the airplane and general finesse was lacking." 

As such, the pilot did not receive a final evaluation flight and was not awarded a completion certificate.  The pilot did receive additional flight instruction after returning home from his flight instructor who attended the SR22 training with him.

A review of the pilot's logbook revealed that his last instrument flight occurred four months prior to the accident on June 26, 2006.  His last six instrument approaches were flown with a CFI 5 months and 26 days prior to the accident on May 1, 2006.  These instrument approaches were conducted in simulated conditions.

Okay, so what happened?

For starters, the NTSB ruled that the probable cause of the accident was as follows:

"The pilot's failure to maintain airspeed while maneuvering with a low ceiling in instrument flight conditions, resulting in an inadvertent stall, and collision with trees and the ground."

"Factors in the accident were the pilot's failure to follow the published missed approach procedures, and the airplane's checklist procedures for a balked approach."

But what REALLY happened . . .

No one but the pilot, who survived, will know what really happened on this tragic day.  But we can surmise a good deal from the NTSB accident report. 

Below are examples of several factors that may have contributed to this fatal accident:

IFR Recency of Experience Requirements

First, this pilot was barely IFR legal.  He managed to get in his last required 6 instrument approaches 5 months and 26 days prior to the accident flight.  And these were in simulated conditions!

Instrument Currency Requirements per FAR 61.57(c)(1)

(1) For the purpose of obtaining instrument experience in an aircraft (other than a glider), performed and logged under actual or simulated instrument conditions, either in flight in the appropriate category of aircraft for the instrument privileges sought or in a flight simulator or flight training device that is representative of the aircraft category for the instrument privileges sought--

(i) At least six instrument approaches;

(ii) Holding procedures; and

(iii) Intercepting and tracking courses through the use of navigation systems.

(d) Instrument proficiency check. Except as provided in paragraph (e) of this section, a person who does not meet the instrument experience requirements of paragraph (c) of this section within the prescribed time, or within 6 calendar months after the prescribed time, may not serve as pilot in command under IFR or in weather conditions less than the minimums prescribed for VFR until that person passes an instrument proficiency check consisting of a representative number of tasks required by the instrument rating practical test.
 

FAR 61.57(c)(1) is one of the most laughable of all federal aviation regulations.   This instrument currency requirement has been watered down over the years by special interest groups wanting to reduce training burdens on pilots.   Those who believe and minimally abide by it often die in scenarios just like this one.

Faulty Button-Pushing Skills:

Second, the Cirrus SR22 is a wonderful airplane and a steady IFR platform, perhaps the best.  Its glass panel turns position awareness into a simple walk in the park. 

But . . . and this is a big but . . . it is a technically advanced aircraft (TAA) that requires consummate button-pushing ability.  There's a lot going on when transitioning from the cruise to the approach phase of flight. 

While not revealed or suggested in the NTSB report, the pilot may have encountered difficulty getting his avionics set up properly for the report. 

Autopilot Dependence:

Given the ease and accuracy of coupled autopilot approaches, it is easy for pilots to become dependent upon these technological wonders.  In fact, they can become so dependent on the autopilot that they quickly lose their own instrument "hand flying" skills. 

Then one day, the autopilot fails.  The hapless pilot is left to struggle with the needles with little or no instrument proficiency!

No Actual IFR Approach Experience

Next, there was the weather.   After exhaustive logbook analysis, the NTSB report revealed NO instrument approaches having ever been flown by this pilot in actual IFR conditions.  This MAY have been this pilot's first such attempt!

Simulated IFR training, whether under a view limiting device or in a GA flight simulator is a notoriously poor substitute for training in actual IFR conditions. 

A pilot's first encounter with actual IFR conditions, regardless of the number of simulated instrument hours, can be a daunting or disarming experience!

"Personal Minimums":

Lastly, there is the matter of "personal minimums."  Many pilots, particularly new instrument pilots, are fond of setting personal minimums for themselves.   They say, for example, "I will never attempt an instrument approach when the ceiling is below 600' or the visibility is less than 2 miles."

Well, it's time to wake up and smell the coffee!  This guy took off expecting his destination airport to be VFR.  That's what the FSS briefer assured him. 

Guess what . . . the forecast was wrong!  And the forecast is OFTEN wrong, so the notion of personal minimums is a flimsy policy.  

Sadly, this seed of having "personal minimums" is planted by well-intentioned flight instructors who encourage their students to establish and maintain less than the required proficiency to operate in the real world.   In truth, instrument pilots should be capable of flying instrument approaches down to published minimums OR they should restrict their flying to VFR only!

As in all such accident discussions, our purpose here is not to criticize or to make light of the pilot's actions.  In the panic of the moment, any of us may have acted in the same way. 

Instead, we have an obligation to learn what we can from every tragic accident in the hopes that lessons learned may prevent them from being repeated.  NTSB Report

 

Memorize It!!!

There are few things as frustrating to instrument pilots as scrounging around looking for a flight plan form to file an instrument plan!

We're not talking rocket science here.  Why not commit the flight planning form to memory?  Once done, we can breeze through the filing process any time, any place . . . like in the car while on the way to the airport.  This presupposes, of course, that we have done all of our actual flight planning at home before getting into the car!

More importantly, memorizing the form saves a lot of time when talking with the briefer . . . and we sound like more proficient pilots.

Image of a flight plan form

 

FAA Offers Revised "Known Ice" Letter of Interpretation

Who says the wheels of justice move slowly?  At the prompting of AOPA, the FAA issued of revised Letter of Interpretation on the question of what constitutes "known ice."

This entire matter began over a year ago when I sent a letter to the FAA requesting that they clarify their legal definition of "known ice."

The answer I received back illustrated the naivete' of the FAA's legal eagles regarding meteorological factors that contribute to airframe icing.

In a letter dated June 6, 2006, the FAA Eastern Region Office of Regional Counsel said, in essence, that "known icing conditions exist when visible moisture or high relative humidity combines with temperatures near or below freezing.  Since clouds are a form of visible moisture, flying through clouds at an altitude that is near or below freezing would constitute flight into known icing conditions."

The stumbling phrase was, of course, "high relative humidity."  Anybody out there know what that is??

Angry responses

This letter of interpretation sparked two angry responses from the general aviation community.  First, I was criticized by many OTA readers for asking a question that we really didn't want to have answered!  We had been flying in and around icing conditions sort of "between the lines" of the law for decades and few pilots were willing to risk having this "gap" closed.

Second, following my asking of the question, the FAA clearly made it illegal to fly a non-known ice certified airplane into sub-freezing clouds.   It quickly looked like this "gap" had, indeed, been slammed shut.

This ruling, in effect, had the effect of closing down nearly 90% of all (legal) IFR flight instruction from October 30 to April 1 in the northern climates.  It also threatened the continued operation of many Part 135 cargo flights in non-known ice certified airplanes during the same period here in the north.

Was I wrong by asking the question?

It didn't take long before I and Over the Airwaves felt heat from my fellow pilot community from around the nation for asking the question.  "Dangerous dogs are best left sleeping," was the common thread voiced by my pilot critics.

I reasoned, however, that while the FAA may be viewed by some as an "angry dog," we're living in an enlightened world of aviation where most of us, including the FAA, really do operate rationally. 

Sure, there are skeptics and scoundrels on both sides of the FAA/pilot fence, but operating in winter skies "between the lines" of the law is no place for any of us to be, and still hope to avoid an FAA enforcement action taken against us.

Closely related to this, how could we CFII's set a good example for FAR compliance and still provide a reasonable level of IFR flight instruction in the northern climates during the winter months?

That's why I asked the question.

AOPA to the rescue!

Recognizing the absurdity of the FAA's June 6, 2006 letter of interpretation of what constitutes "known icing," AOPA quickly took the FAA to task on the matter. 

AOPA's Director of Regulatory and Certification Policy, Luis Gutierrez prepared a wonderfully worded letter to the FAA HQ Office of General Counsel demanding that it rescind that letter of interpretation.

In its customary speedy way of responding, the FAA eventually rescinded the June 6 letter and on April 3, 2007 (10 months later) issued a proposed NEW letter of interpretation on what constitutes "known icing."  They published this proposed NEW letter in the Federal Register for the purpose of soliciting public comment of over the next 30 days.   You can view this Federal Register posting by clicking HERE.

Is the proposed NEW letter of interpretation good or bad?

In word, the proposed new letter of interpretation is GOOD!  First, the new LOI removes the automatic "guilty" charge for entering a sub-freezing cloud in a non-known ice certified airplane.  This, alone, allows us to legally resume IFR flight training during the winter months in the Northern Hemisphere.   

In essence, the new interpretation leaves the decision up to what a reasonable and prudent pilot would do based upon his or her analysis of all available information.

Second, Part 135 flight operations in non-known ice certified airplanes can likewise legally resume here in the north during the winter months.

A cautionary note is warranted, however.  While the FAA can no longer make a prima facia case against a pilot of a non-known ice certified airplane for entering sub-freezing clouds, there is language in the proposed NEW LOI that bases any possible enforcement action on what a "reasonable and prudent pilot" might do in a similar circumstance. 

The "reasonable and prudent" doctrine has its origins in the old British Common Law and is the basis for many of our legal interpretations today.

This leaves open, of course, as to who and what defines a "reasonable and prudent pilot" would do in a similar circumstance.

The FAA invites comments

The Federal Register posting has a web link through which anybody can submit comments on the proposed NEW letter of interpretation through May 3, 2007. 

Over the Airwaves has received hundreds of emails on this matter and the general consensus among pilots is that this is a good interpretation of "known icing."  It recognizes that the ultimate decision regarding flight into sub-freezing clouds rests exclusively with the pilot, based upon his or her analysis of all available information (FAR 91.123).

Like so many things that we do as pilots, it is impossible for the FAA to issue "black and white" rules governing each mile along our proposed route of flight.  The variables are too complex and too varied to cover every possible situation. 

As for the "reasonable and prudent" pilot, we proficient pilots do understand the meteorology and physics of icing, including droplet size and temperatures.  We NEVER find ourselves in icing conditions without an immediate and "golden" back door.  We always have warmer temperatures or clear skies immediately above or below our route of flight.  Nor do we ever penetrate clouds where PIREPs or AIRMETS warn of light to moderate icing. 

"Reasonable and prudent" pilots do not place their aircraft and their lives at risk in icing conditions.  And if they do, FAR 91.13 (careless and reckless violation) works just fine!

In summary, we did good.  Articles published in Over the Airwaves prompted a fire-storm of discussion on numerous on-line chat forums regarding the "legality" of operating in sub-freezing clouds in non-known ice certified airplanes. 

This prompted me to refer the matter to the FAA for an "official" answer.  We eventually received an answer we did not like.  AOPA came to the rescue.  We soon received a better answer . . . and an answer that finally removes the "between the lines" of legality behavior we pilots have been following for decades!

The general aviation world is better served by having both the FAA and the pilot community on board, together, with rules and regulations we both understand.

Lastly, we need to thank Phil Boyer and Luiz Gutierrez of AOPA for quickly and forcefully picking up the sword on this important matter. 

 

Private and Instrument Practical Tests Passed on Same Day!

Most people call it a good day when they pass either their private pilot or instrument practical test.  For Greg Barnhard of Orchard Park, NY, a good day is when you pass BOTH on the same day . . . . and on your 17th birthday at that!

That's just what young Mr. Barnhard did this past week.

Greg took his first GA plane ride at age 10 and his first logged lesson at age 14. 

In the tradition of a former era in aviation, Greg washed airplanes in exchange for flight lessons.  Avgas was in his blood and he wasn't going to let his young age get in the way of learning to fly!

Greg soon won the respect of old time aviators hanging around the Akron, NY Airport.  His knowledge and enthusiasm were refreshing to see and hear.   Flight instructors like Pete Treichler, Dan Maloney, and me took Greg under our wings knowing that he would one day make us all proud.

Greg came along with us to Sun 'n Fun and Oshkosh each year where he would challenge us with increasingly difficult  aeronautical questions! 

The photo (right) shows Greg at the controls of Dan Maloney's RV-4 tucked up under the wing of my Cessna 210 on the way back from Sun 'n Fun last year.

Good going, Greg.  We expect to see you make a difference in aviation!

 

Controllers can make or break the flight training experience!

It was a sunny day this past Saturday afternoon and the Syracuse, NY TRACON controller was busy keeping safe distances between flocks of GA airplanes.  I was on an instrument cross-country flight with an instrument pilot giving some refresher training.

What could I offer this pilot?  Hmmmm . . . how about a partial panel, no-gyro, ILS approach?

I had attempted this exercise many times before but was nearly always turned down by controllers whose apparent workloads prevented them from participating.  Oh well, I thought.  Let's try again.

"Syracuse Approach, Nxxxx, how about a practice no-gyro steer to the Oswego ILS Runway 33 Approach," I asked?

"Roger, Nxxxx, turn right."

"Nxxxx, stop turn."

"Nxxxx, turn left."

"Nxxxx, stop turn."

And so it went as the otherwise busy Syracuse controller, who was handling a sector full of other traffic (134.27 Sunday, March 30, 1745Z - if the SYR TRACON facility manager is reading), skillfully turned us on to the final approach course.

Curiously, you do not have to fly very far where effective flight training can frequently be frustrated by a controller in pre-retirement mode with little tolerance for struggling student pilots.  Off-handed remarks, audible sighs of impatience, and blatant intolerance can turn students off to aviation faster than a failed medical.  They are rare, but they are there!

If you ever encounter a grump, note the date, time, facility, and frequency.  On the ground, call the facility supervisor.  He or she will pull the voice tape and will take it from there.

Good going, Syracuse Approach . . . have a cup of coffee and a donut on us!

 

Runway Signage . . . Know them!!!

Flying and navigating an airplane through the national airspace system can be like a walk in the park compared to maneuvering on the ground, at night or in low IFR, at an unfamiliar airport . . . particularly BIG airports.

Some have suggested that today's airport signage was designed by a disgruntled FAA employee on LSD.  It's often poorly positioned, difficult to see, and easy to misunderstand.

Unfortunately, flight students who are trained exclusively around the same homedrome airports are not given opportunity to witness the challenges they will one day face when at an unfamiliar Class B or C airport on their own.

One of my favorite flight training exercises is the New York/Philadelphia TRACON tour.  This tour includes landings at LaGuardia, JFK, Newark, and Philadelphia International.  This full day exercise that exposes students to both the busiest airspace in the world as well as some of the most complicated airport signage.

This is "must" training for any pilots planning on traveling up and down the busy east coast corridor.

Take a minute to review the above airport signage.  Be certain that you understand each sign.  When taxiing around ANY airport and you encounter an unfamiliar sign, stop.  Call the tower or airport unicom and ask what it means.

 

Carburetor Icing . . . and No Apparent Back Door!

It can happen suddenly!  A once smooth running engine begins to miss and shake on its mounts.

You search the gauges for an indication of what is wrong.  Plenty of gas.  Oil pressure and temperature gauges are both in the green.  RPM is dropping slightly.

You cycle the mags, switch fuel tanks, turn on the fuel boost pump, and apply carb heat.   Your brain is spinning. You begin losing altitude as you search for answers.

This is likely what happened this past August to the president of the Pueblo Community College as he was flying on a VFR flight plan from Pueblo to Durango, CO in his Piper PA-24-180 Comanche.

Prior to departure, the pilot received a full FSS briefing.  He was told that VFR flight was not recommended due to an AIRMET for occasional IFR  conditions and another current AIRMET forecast mountain obscuration.

At the time of the weather briefing, current weather conditions had not been loaded into the FSS computer system, so the briefer gave the pilot the previous hour's observations where Pueblo, Alamosa, and LaVeta reported VFR conditions.

At the conclusion of the briefing, the pilot said: "I'll go ahead and give it a shot."

Those final words . . . "I'll Give it a Shot!"

We pilots often pride ourselves in taking charge of the situation.  We can look risky weather in the face and boldly bet the farm on our decision to launch.  Sometimes, as in this case, we lose . . . and we lose more than the farm!

According to the NTSB report, the probable accident cause was:

"non-mechanical partial loss of engine power due to carburetor ice, and the pilot's failure to maintain clearance from terrain."

"Contributing factors in this accident were weather conditions conducive to carburetor icing and the pilot inadvertently flying into instrument meteorological conditions."

Given the right combination of high humidity and proper temperature, carburetors can ice up in VFR conditions while in full cruise power setting.  Curiously, the application of carburetor heat may NOT solve the problem quickly.

The pilot in this case apparently encountered the problem while either in or above the clouds at some altitude higher than the 11,589' MSL point where he impacted mountainous terrain during descent about 16 miles northwest of Mosca, Colorado, near the Great Sand Dunes National Monument.

No Back Doors!!

Okay, stuff happens to the best of us.  But when it happens without our having back doors, shame on us!  I vividly recall a flight several years ago with my good friend, Kelly Brannen, from San Francisco to Buffalo, NY in his newly purchased Piper Archer.

We encountered suspected carburetor icing at 13,000' over the Rocky Mountains while passing eastward near Elko, Nevada.  We had been following Victor 2 which kept us well clear of the highest peaks.  I had been keeping my eye on the GPS moving map noting passing airports as well as the highways and roadways meandering through the valleys below. 

Suddenly, the engine began missing.  The very FIRST thing we did was initiate a right 170 degree turn to the Elko, NV Airport just 8 miles behind us.   I notified Salt Lake Center of our emergency and was immediately re-cleared as requested.  Our back door was secured and we landed safely.

College may not have been so prepared . . .

Again, we can draw conclusions ONLY from what is contained in the NTSB accident report.  Based upon this, the accident pilot found himself without back doors. 

Perhaps it was his intention to remain VFR to keep an eye on the mountains below.  Did he have a GPS moving map up and running displaying any highways below?  Remember, highways are seldom constructed over mountain ridges.

There are an entire host of things we can do to build back doors for ourselves.  For example, when crossing high mountains in a non-turbocharged airplane, follow the Victor airways.  Their MEAs (minimum enroute altitudes) are always lower than the OROCAs (Off-route obstruction clearance altitudes). 

When all other back door options fail, fly along interstate highways!

NTSB Report

 

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Seen one . . . you've seen them all, right?  Think again!

After a while one instrument approach looks like the next.  We pull and review the instrument approach plate, slow the airplane to the approach speed, secure our approach clearance, and voila', we slither down the final approach course to a textbook landing.

Not so fast, Charlie.  Take a look at the VOR-A approach to Wellsville, NY (KELZ).  Pay particular attention to the placement of the final approach fix (FAF).   It's just 1.1 miles from the runway!

Next, look at the profile view of the above IAP.  You cross the FAF inbound at 3,600 feet, reduce the power, point the nose down, and you have 44 seconds (at 90kts) to lose 440 feet to reach circling minimums. 

In other words, this is one approach where, in low weather, you could reach the Minimum Descent Altitude (MDA), Missed Approach Point (MAP), make visual contact with the runway, and arrive directly over the airport all in the same instant.  Wow . . . are you ready to land?

Note:  Observe the several towers surrounding the airport!

Arrived Unprepared!

I flew this approach this past weekend with an instrument student in a Cessna 210.  The reported weather was right at the published minimums.  

Arriving over the FAF just a bit fast, we reduced power for the final descent to a hopeful landing. 

Not taking special note of the fact that the FAF was only 1.1 miles from the runway, it quickly became apparent that we would need a quick descent to the MDA before reaching the MAP to have any chance of seeing the runway.  This, of course, pushed our airspeed up to 120 knots.

It took only 33 seconds from the FAF to reach the airport, which did not come into view until we were directly over top of it.  With visibility well below the 1.25 miles required to meet the requirements per FAR 91.175, we flew the missed approach procedure.

Remember . . . the required visibility is generalized.  It is NOT the distance from the runway.  Had we been able to see 1.25 miles in any direction while over the airport, we could have "legally" landed.  Unfortunately, we did not have this visibility.

The lesson in all of this is . . . never assume that one instrument approach is like the next.  This one is UNIQUE.  Flying it in low IFR weather requires consummate planning and absolute speed control, and careful attention to details.  

Mess it up and you could become an aerial dart in one of the surrounding hills!

 

VOR Change-Over Points

We see VOR change-over points (COPs) as a vertically shaped "Z" on some victor airways.  They tell us when we should shift our primary VOR navigation from the VOR behind us to the VOR ahead of us. 

Note the example below, the COP on V344 occurs 45 miles east of the VOR on the left.  This graphic also illustrates the rationale for some COPs.  In this example, it is due to the interference of a mountain with the VOR signal.

The changeover point also has an effect on the primary and secondary obstacle clearance areas.   For example, on long airway or route segments, if the distance between two facilities is over 102 NM and the changeover point is placed at the midpoint, the system accuracy lines extend beyond the minimum widths of 8 and 12 NM. 

This produces flare or spreading outward of the secondary safety area at the COP, as shown in the illustration below.

While the GA world is rapidly changing to GPS navigation, unless we have an IFR certified, panel mounted GPS, we're still obligated to navigate by ground-based navigation systems. 

Let's not forget the rules under which these land-based navigation systems operate!

 

 

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Fatal Graveyard Spirals are Preventable

Last May, a pilot and three passengers perished in a Piper 28-236 (Piper Dakota) over New Jersey in what was likely a classic spiral dive. 

The last radar track on the doomed aircraft measured a descent rate of 1,300 feet in 4 seconds.  This translates to over 19,000 feet per minute, which explains, of course, why pieces of the aircraft were observed by witnesses to be falling from the sky prior to impact.

Circumstances surrounding this flight were all too familiar.  A low time, non-instrument rated pilot launches in marginal VFR weather, encounters IFR conditions, and loses control of the airplane.  This, in fact, is the most common scenario of all fatal accidents.

The Typical Accident Chain . . .

Most pilots understand that fatal accidents are a result of a string of contributing factors rather than just one or two.  In this case, the accident chain likely began several days before the ill-fated flight. 

Had the pilot reviewed the weather forecast several days before the flight, he would have likely concluded that VFR flight would likely not be possible.  To the pilot's credit, however, he did receive a standard Flight Service Station (FSS) weather briefing just prior to his departure.

Here is the message the pilot received from the FSS briefer:

"During the briefing, the pilot was advised of an AIRMET for instrument meteorological conditions (IMC) that extended across the intended route of flight, and that visual flight rules (VFR) flight was not recommended."

"The pilot was further advised that some of the stations along the route of flight were beginning to report VFR conditions, and that terminal area forecasts called for the weather to improve."
 
    -- from the
NTSB Report

The "Sucker" Briefing!

The FSS briefer was doing his job.  He informed the pilot of the IFR conditions followed by the "VFR flight was not recommended."   But then he held out a ray of hope that the pilot globbed on to.  Noting that the forecasts called for improving weather, the pilot elected to launch.  

It's human nature to search for reasons to justify our actions.  In this case, the briefer's simple declaration that the forecast called for improving conditions may have been the trigger that caused the pilot to go ahead with the flight.  In essence, the pilot likely allowed this bit of good news to sucker him onward with his plans!

This was the second link in the accident chain.

Shortly after launching, the pilot apparently entered instrument conditions and failed to execute a safe 180 degree turn or descent back to VFR conditions.  Instead, he allowed the airplane to reach an excessive bank angle.

As the bank angled increased, his altitude no doubt began to drop.  Unaware of his steepening bank angle, he likely pulled back on his yoke and added power to restore his lost altitude. 

This was the third and final link in the accident chain.

With the airplane in a steep bank angle, pulling back on the yoke serves to tighten the turn and quickly place the airplane into a steep, descending spiral.  The addition of power hastens this process.

Wings-Level vs. Spiral Dive: 

It is very difficult to over-speed an airplane in a wings-level dive.  As the speed increases, lift increases and it requires ever-increasing forward pressure on the yoke to maintain the dive.

In a spiral dive, on the other hand, airspeed can quickly increase to a point where the airframe can self-destruct in flight. 

I asked OTA reader and supporting sponsor, Paul "BJ" Ransbury, President of APS Emergency Maneuvers Training, to explain the aerodynamics difference between a wings-level and a spiral dive. 

By the way, BJ is a graduate of the Royal Military College of Canada with a B.Sc. in Honors Mathematics and Physics.   He has served 12 years as a military officer and fighter pilot in the Canadian Armed Forces flying the F/A-18 Hornet.

Airspeed Control: Wings-Level versus a Spiral Dive
                                   -- by Paul "BJ" Ransbury, MCFI-A

Wings-Level Dive:

When an aircraft is trimmed for 1-G wings-level flight at a constant rate of descent (or climb), the pilot is actually trimming for an angle of attack that results in a specific airspeed for a given power setting.

In a wings-level dive at speeds above the trimmed 1-G airspeed, the same aircraft, if left to trim alone, will tend to both shallow dive angle and reduce airspeed towards the trimmed flight condition.

Generally speaking, unless the pilot physically applies overriding forward control column pressure, a properly trimmed aircraft in a wings-level dive is inherently resistant to over-speeding.

RESULT: Proper cruise trim plus wings-level flight attitude = Overspeed Resistant

Spiral Dive:

In a spiral dive where the bank angle is greater than 60 degrees and increasing, the nose of the aircraft tends to drop due to insufficient lift being generated in the vertical. As the nose drops, the typical pilot response is to apply aft control column pressure in an attempt to bring the nose back to the horizon.

Due to the inherent overbanking tendency of the high wing on the outside of the turn, simply increasing aft control column pressure alone will not usually effect recovery in a normal category aircraft.

Similarly, an aircraft trimmed for a specific angle of attack (usually to sustain a target airspeed in 1-G wings-level flight) in a spiral dive, when left to trim alone, tends to perpetuate the spiral dive resulting in a continued overbanking tendency and increasing airspeed.

The ever-increasing airspeed generates more and more lift as the wing continues to fly at a constant angle of attack. The increase in lift translates to an increasing g-load in the cockpit as the spiral progresses.

A spiral dive is neither an airspeed problem nor a g-loading problem. Those unfavorable parameters are simply symptoms of the root cause which is the aircraft's flight attitude. Re-orienting the flight attitude to wings-level is a key concept in understanding spiral dive recovery as well as unusual attitude nose-low recovery.

RESULT: Proper cruise trim plus over-bank flight attitude = Overspeed Inherent
 

So what really happened in this Piper Dakota Crash?

According to the NTSB report, "the main wreckage came to rest inverted about 20 feet beyond the initial impact point.  It included the fuselage, empennage, and inboard 7 feet of both wings. Portions of the stabilator, outboard portions of the left wing, and the right aileron were clustered in an area between 1,000 and 1,500 feet from the main wreckage.  The outboard portion of the right wing was located about 2,000 feet from the main wreckage."

"Examination of the inboard and separated outboard portions of both wings revealed signatures consistent with an in-flight separation in the positive, or upward, direction. The stabilator exhibited signatures consistent with failure in the negative or downward direction. All of the fracture surfaces examined on the wing and stabilator portions were consistent with overload. Control cable continuity was confirmed from the cockpit, to the stabilator, ailerons, and rudder. All cable breaks exhibited signatures consistent with overload."

 

NTSB Probable Cause Findings:

"The National Transportation Safety Board determines the probable cause(s) of this accident as follows:

The non-instrument-rated pilot's inadvertent VFR cruise flight into instrument meteorological conditions, and his subsequent loss of aircraft control, which resulted in his exceeding the design stress limits of the airplane, and an in-flight separation of the wings and horizontal stabilizer."

In summary, like so many fatal accidents, the accident chain began when the pilot failed to follow the FSS briefer's recommendation that VFR flight not be pursued.  It continued with the pilot's inability to execute a safe retreat from IFR conditions.

Maintaining a wings-level flight attitude and/or executing a 180 degree turn in IFR conditions should be within the non-instrument rated private pilot's repertoire of flying skills.  Primary pilots who fail to master these skills can easily fall victim to an unexpected encounter with IFR conditions.

Flight schools and many CFIs are fond of saying, in their own defense, that non-instrument rated pilots have no business penetrating IFR conditions.   These instructors FAIL to acknowledge the fact that IFR conditions are sometimes not predictable.  Summer haze in the late afternoon setting sun over large bodies of water is an excellent example of unpredicted IFR conditions.  A sudden temperature drop of a single degree or two that results in fog is another example.

If you are a non-instrument rated pilot and have never been in real IFR conditions, hire a CFII and get comfortable in the clouds.  It just might save your life and the lives of your passengers.  

NTSB Report

 

 

Quotable

"Our school's insurance policy doesn't allow to take off if the ceiling is lower then 1,200.  And doesn't let us fly on the X/C if the forecasted conditions at destination from 1 hour before to 1 hour after scheduled arrival are less then 2,000' ceiling, 3 SM visibility." 
  -- CFII candidate, Florida Flight School   [Source]

The above quote is real!  It comes from a student who presented himself last week to a Designated Pilot Examiner (DPE) for the CFII checkride. 

The examiner looked at the candidate's logbook and noted that he had 256 hours of "simulated" instrument time.  He had logged 136 instrument approaches in the previous six months.  He had zero ACTUAL instrument hours over his entire flying career!

When the examiner commented upon the candidate's total absence of actual instrument time, the candidate reminded the DPE that the FAA does not require any ACTUAL instrument experience to qualify as an instrument instructor.

Why GA pilots die!

If anybody is curious why general aviation continues to be plagued by one fatal accident nearly every day of the week, with most of them due to weather related causes, this is a large part of it!  

This is ludicrous.  No, it's insane and nobody is doing anything about it! 

Imagine signing up for instrument training and your CFII has never been in the clouds before.  Worse, imagine if this CFII travels north and begins teaching in the winter where IMC occasionally comes with freezing rain and ice.

Unfortunately, flight schools like the one referenced in the above quote, would rather push their graduates through the checkride than to realistically prepare them for the real IFR world they will one day face.  

Tragically, there are FAA approved Part 141 flight schools throughout the United States that have similar weather restrictions governing their instrument flight training.  Once the ceiling drops below marginal VFR, they corral their instrument students into simulators rather than provide them with the real world training they will need to remain safe aloft.

Consequently, hundreds of new CFIIs are turned out every year who have NO real, in-the-clouds, experience.

Want to know why??

The reason why so little instrument training is provided in ACTUAL instrument conditions is that many flight schools employ their own graduates who likely have little or no ACTUAL instrument training themselves. 

This self-perpetuating system of training mediocrity is producing CFIIs totally incapable of providing genuine instrument instruction.  And the FAA is making this all possible through their permissive regulations.

Where is the AOPA and the National Association of Flight Instructors (NAFI) on this issue??  Through their silence, are they endorsing this absurd practice?   You be the judge.

In reality, it's likely that very few people are actually aware of this practice of producing CFIIs who have no actual IFR experience. 

So how did this guy do on his CFII checkride?

It so happened that there was a 400' overcast ceiling on the day of the scheduled checkride.  The examiner said to the candidate, "If you have a problem with taking the checkride in this weather, I'll have to give you a pink slip."

The candidate thought that it was "absolute insanity taking off with such a low ceiling."  He took the pink slip and rescheduled the checkride for the following week!

And so it goes . . . another CFII enters the system who believes it is "absolute insanity" to take off into a 400' overcast ceiling.  Do you believe that any of his future students will ever see the inside of a REAL cloud?

What about you and me?

Frankly, there is little you or I can do about this absurdity other than to protect our own safety interests and the safety interests of our friends. 

We need to recognize that the CFII credential, alone, reveals very little of its holders' qualifications and experience to teach instrument flying.  Similarly, we need to know which flight schools set artificially high weather minimums for instrument flight instruction. 

If you are engaging a CFII to provide instrument training, it's fair game to look at his or her logbook.  Ask how much actual instrument experience they really have.  Check their references.  Remember, it's your money and your life!  

If you are an instrument student or are contemplating the pursuit of an instrument rating, be certain that you are provided training in ACTUAL instrument conditions.  Later on, you will know why!!

Let me hear from you!

Please pass along the names of flight schools who either limit operations to higher than instrument minimums or who refuse to train in actual IFR conditions.  I will publish their names in OTA.  Please email this information to rjma@rjma.com.

Note: AZ and NM flight schools exempted:  They seldom get IFR conditions!

Fly safe,

Bob Miller, ATP, CfII
rjma@rjma.com
716-864-8100

 

Upcoming Events of Note

April 17 - 23 - Sun 'n Fun

You can be there OR you can access many of the live seminars right through your computer!

The FAA's production facilities located on the grounds at Sun 'n Fun will be streaming live video of many of the seminars.  To access these videos, simply click on http://www.faaproductionstudios.com/, then click on View Seminars Live!

I'll be attending Sun 'n Fun and will be reporting the events daily back to OTA readers.


Rochester Wings May 8 & 9, 2004

May 4 and 5 - Rochester WINGS - Rochester International Airport (KROC)

Over the Airwaves will be hosting an exhibit booth.  OTA collaborator, Keith Harlock and I will be signing up new OTA readers.  Please stop by and say hello!  Click HERE for more information.

 

Supporting Sponsors


APS Emergency Maneuver Training specializes in upset recovery training, stall/spin awareness, aerobatics and spin recovery training.

 

 

Read Back

The following reader comments were received over the past 14 days:

"Knowledge is power and adding Over the Airwaves to my arsenal will make me a better pilot. Thank you for this opportunity."
-- Kyle L. Koski, Sierra Vista, AZ


"Great Job, Bob! You are on target (as ususal) . . . "
-- Greg Kryspin, Norwalk, CT


"OTA is a great site!  I am an aerospace engineer for the FAA, working in aircraft certification (we issue the AD's, Type Certificates, etc.).
-- Steven Rosenfeld, Glencoe, IL


"First, thank you for taking your time to publish Over the Airwaves and to make it freely available. I greatly enjoy reading your 'publication' and appreciate the mini arm chair flying lessons it affords me."

"I did want to provide some feedback about a statement you made in your latest issue.  You wrote: ""Why not, instead, request the instrument approach to runway 18 (with a tailwind), descend down through the clouds and then "circle" to runway 36. In the process, you save 20 miles of flying!""

"Obviously there are lots of variables that go into sound PIC decision-making. But I wanted to write to question the cost-benefit trade-offs of this statement. If we assume the plane in question is flying at 120Kts, then we are only talking about another 10 minutes or so of flying time."

"What do we get for an extra 10 minutes in the air? A straight in landing without the complexity and risk of a circling approach. I am certainly not advocating that the PIC should never select the circling option, but for me, saving a few extra minutes of time is a questionable justification all other things considered."

"Thanks again for providing this valuable resource to the pilot community!"
-- John Leslie

Reply: You are correct.  Under most circumstances, 10 minutes may not matter in the grand scheme of things.  On other occasions, you or a passenger(s) may have a bladder that's ready to burst, or there's a genuine threat of icing on the approach, or menacing thunderstorms pop up in the area, you may prefer to execute a circling approach to get on the ground sooner.  I've experienced all three urgencies!
-- Bob Miller, Over the Airwaves 

"Over the Airwaves is a great resource for students and experienced pilots as well!"
-- Martin Harris, Lumberton, NJ


"Over the Airwaves is an excellent source of salient information for pilots. Among other things, its articles help keep me focused and aware of risks and how to manage them."
-- Les Mardiks


"I have been reading Over The Airwaves for about one year. Your column keeps safety at the forefront. Good job. Thank you."
-- Ken Corcoran, St. Louis, MO


Robert, I appreciate your bi-weekly journal and find it very useful to me and often recommend it to my aviation friends and partners."

"From time to time, I find it somewhat frustrating and demeaning in the manner in which you speak about CFI's. As an example, "inept, immature, questionably skilled, judgment-challenged, and insensitive CFIs standing in line for airline jobs(your words)."
-- Russ Calverley, CFI

Reply: I apologize for appearing to demean the flight instructor corps.  Many CFIs do an excellent job at preparing future aviators.  Unfortunately, however, we have flight schools pumping out CFIs with little or no experience.  Many of these neophyte CFIs are singularly responsible, in my opinion, for two very bad outcomes:  (1) over 50% of all new pilot starts never obtain their pilot certificate, and (2) our deplorable fatal accident rate.
-- Bob Miller, Over the Airwaves 

"I read about you in that icing flap on AOPA, and saw how much GOOD info you convey in OTA. I want more!"
-- Andrew Morrison, Collegeville, PA


"I'm a Private Pilot student with a private CFI who recommended Over the Airwaves after I expressed a lot of confusion over yaw concepts.  This edition was sent out very soon after my lesson on yaw and he recommended I sign up immediately. His comment was, you're always "right on".
-- Amy Dunahoo, Gainesville, Ga


"I am an Embry Riddle student working towards my multi commercial.  Over the Airwaves is a good read a nice departure from Riddle's standardized eat, sleep, and breath the book.  Keep up the good work!"
-Paul Giardino, Daytona Beach, Florida
 

Reply: Learning "by the book" is important and should be adhered to.  Let's not forget, however, that much of the real world doesn't operate by the book. 
-- Bob Miller, Over the Airwaves 

"Keep up the great work at Over the Airways.  Stimulate thought... creative thinking."
-- Obie Young, FAASTeam Production Manager, Orlando, FL


"In your OTA issue of March 25th, you mentioned the possibility of fatigue being an added factor in an accident.  Could it be that "sleep apnea" may be a contributing factor to fatigue?  After a little research I found that sleep apnea beyond the mild stage is considered a reason to deny a pilots medical.  I found this interesting because we don't hear much about this in aviation. Maybe because it may ground many pilots? But just because a pilot chooses not to tell their doctor about it, doesn't make the condition go away!" 

"If someone has sleep apnea, there are different things that can be done to deal with it and hopefully eliminate it. Losing weight is one which would also be a benefit when flying. Using a CPAP machine when sleeping to get a good nights sleep, and different surgery options to eliminate obstructions in the airway that cause sleep apnea. I was an E.M.T. in the past and the one thing that is taught is airway, airway, airway. Kind of like airspeed, airspeed, airspeed.  Without either, you die!"

"My observation is most pilots during short flights are usually pretty aware of things during the entire flight vs. those on business or long trips that give them more time to "relax."  There may be more of a tendency for sleep apnea to be a factor on those business or long trips because the flight times are longer. Without a good nights sleep we set ourselves up for fatigue on those long days. Thanks for OTA