Sunday,
October 14, 2007 Vol. IV No.
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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.
Dear Pilots and Aviation Enthusiasts:
Kill George! No, this is not a tasteless political statement. Instead, I refer to the little box with a couple buttons located in the center of the panel of most aircraft having 200 horsepower or more. When activated, this box transforms some of us pilots into casual observers incapable of controlling the very fast-paced events taking place around us. George, of course, is
the affectionate name given to autopilots by aviators of an
earlier era. Once regarded as valuable labor saving
devices for crews of large, cumbersome transport aircraft
requiring heavy control
Unfortunately, this new role is arguably responsible for the demise of more than a few hapless pilots. I recall accompanying the owner of a brand new glass composite aircraft through his first several hours of factory training. The instructor repeatedly told him, "After takeoff, climb to 300 feet AGL, punch on the autopilot and leave it on until reaching short final at your destination." My friend dutifully complied and, to my knowledge, has been flying that way ever since! If anybody should be shot, it's that factory instructor! Apparently, this aircraft factory has more confidence in the reliability of its autopilot than in the skill sets of their typical customer. Truth be told, this factory could be right! Okay . . . so the autopilot is a useful labor savings device, but it was never intended to be a crutch for pilots who were so rusty on the gauges that they could not keep the wings level or find a VOR station if their life depended upon it. Why George? Okay, so what is the autopilot's proper role? Why spend the $35,000 or more to equip our airplanes with this so-called labor savings device? For me . . . the autopilot is a second pair of hands during single pilot IFR operations. When activated, I can find and open a chart, brief an approach plate, and pour a cup of tea all while chatting with ATC. These are things that the pilot-not-flying (PNF) generally does for me. When solo in the soup and otherwise occupied . . . George does the flying! But when it comes to the real business of controlling the aircraft, like slithering down the final approach course, in the bumps, with howling winds and ice crystals forming on the windscreen, give me a well-trimmed airplane, left hand fingertips on the yoke, right hand gently nudging the throttle(s), and tiny toe pressures on the rudder pedals. Works every time! Where George gets us into trouble!
The first is currency. More appropriately, the lack of currency. For some reason, we pilots believe that logging time watching the autopilot perform its work provides us with the same skill-honing benefits of manipulating the controls ourselves. OTA readers know that flying only six approaches in the previous six months does NOT ensure proficiency on the gauges. But when these six approaches are flown on the autopilot (or worse, in a simulator) well, we might as well have stayed home in bed as far as developing instrument proficiency is concerned! The second flight regime where letting George fly the airplane can get us into trouble is when flying at night in sub-freezing conditions. Ordinarily, when ice begins to surreptitiously form on the airframe, our airspeed decays and we observe a loss of altitude. When George is doing the flying, however, subtle altitude corrections are automatically made, thus possibly leaving us unaware of ice accretion. As the ice continues to accrete, George brings us to the maximum up-trim limits of the airplane. It then kicks off leaving us precariously close to stall. Given sufficient yaw inputs, possibly from an unbalanced load of airframe icing, the airplane quickly rolls into what can become a sudden stall/spin scenario . . . in the clouds! Don't believe this happens? Go back and examine the last several fatal Cirrus accidents where icing was ruled as a contributing or probable cause factor! The
third flight regime where dependence upon George can get us
into trouble fast is when George suddenly and inexplicably
fails, perhaps at
So there we have it. George can be both a friend and a foe. When used properly and at the right time, George is a great labor saving device. When
misused or depended upon for too much of our time aloft, we
can quickly find ourselves like a heroin addict who is so
dependent upon the white powder that we cannot function properly on
our own! Bob
Miller, ATP, CFII Full Flap Go-Arounds . . . Proper instruction and practice is the key to safe pattern operations
Would it not be better to develop effective checklist habits than to practice something that should never happen in the first place? Maybe this is what the instructor of a primary student soloing in a Cessna 172 was thinking last year in La Belle, Florida? Unfortunately, things didn't work out as he planned. The female student, with a total of 44 hours including 6 hours of solo time, had been enrolled in a professional pilot course at a Florida Part 141 flight school. She departed the St. Lucie County International Airport, Fort Pierce, Florida on an instructional solo to the nearby La Belle Municipal Airport. A witness who was outside at the La Belle airport reported seeing her airplane in the traffic pattern and believed he saw the pilot perform more than one landing on runway 32. Another witness observed the airplane on the initial takeoff climb after a touch and go landing. It climbed to an estimated altitude of 350 feet. Suddenly, the nose dropped and the airplane completed 3 to 3.5 turns of a spin before hitting the ground in a near vertical attitude. Accident Scene . . . The accident investigators found the wing flaps extended to the full down or 30 degree position. Examination of the flap selector/indicator assembly revealed that the flap selector handle was positioned at about the 10 degree position and the flap indicator position was near 30 degrees. The student pilot was killed in the crash.
So what really happened? As with all such aircraft mishaps, we can generally track back through a chain of events and find points where timely preventive or corrective action could have prevented the accident. In this particular case, we have an airplane that prior to the accident was known to have a flap problem. The student's own flight instructor noted that five days prior to the accident that he had "moved the flap lever to retract the flaps, and the flaps and the flaps position indicator did not move." He further stated that he "reset the flap lever to the original position and tired again. This time the flaps and flaps position indicator moved normally." Regrettably, the instructor never reported this discrepancy to aircraft maintenance personnel. Clearly, intermittent mechanical problems are difficult to diagnose and repair. If the student was unaware of this discrepancy and the flaps checked out okay on her preflight inspection, she had no reason to abort her flight. Emergency procedures training . . . While it was not specifically addressed in the NTSB report, it appears likely that the student was performing a touch and go landing and takeoff. She landed with full flaps, then on the go-around, she reached over and raised the flap handle up to the 10 degree flap position. Unknown to her, the flaps did not respond and, instead, remained in the full down position. On the go-around, she likely pitched up to her normal takeoff attitude. When the airplane failed to climb as expected, she pitched up further, ultimately causing the airplane to stall, then spin, then drop, nose first into the ground. Had she practiced full flap go-arounds with her instructor on board (note: there is nothing in the NTSB report that suggested she hadn't), she may have been better prepared to deal with the non-responsive flaps. In summary, flight instructors have a responsibility to prepare their students for unexpected events that may occur during their solo flights. These issues include engine failures, flap malfunctions, stall/spins, fires, radio glitches, crosswinds and gusty winds, brake failures, and control failures. The list, of course, goes on and on. But the better prepared our students are for the unexpected, the better their chances of completing every flight safely. Better alternatives to Flight Service?
The most compelling argument for preserving the AFSS came from readers nestled away in the remote regions of the United States. They said, and rightfully so, that many small, rural airports have no Internet-accessible computers from which to self-brief and to file flight plans via DUATs. File flight plans using the keypad on your cell phone! These remote pilots have a point! That is, until just this past week. DTC DUAT just created a way to electronically receive weather briefings and file flight plans on cellular telephones having access to the Internet! Simply use your cell phone to log on to http://www.duat.com/mobile. Then enter your DUAT username and password just as you would using a computer. Follow the prompts and you will receive a complete DUAT briefing and a flight plan form to complete. Once done, press "send" and, voila', your flight plan is filed! Yes, Virginia. The digital age is here. We do not need people reading vital information to us over the telephone. We're big kids now. Lock-Mart proved to us that we can do this stuff ourselves! Uplink NEXRAD - Don't be fooled!!!!
Well, don't become too smug about your ability to use it to navigate around or through potential or real thunderstorms! OTA reader, Keith Gutierrez, an instrument, multi-rated pilot from Plano, Texas created a neat PowerPoint presentation that dramatically illustrates a recent flight he took near rapidly developing Texas-style thunderstorms. Through the creative use of time-lapse photography, he compares what his uplink NEXRAD images displayed compared to what he was seeing out the window. The results just might convince you to think twice before depending upon uplink NEXRAD to save your bacon when flying in or around developing thunderstorms. Click HERE to view this PowerPoint program. [Please be patient. This is a 5mb file which, with a high speed connection, will take a couple minutes to load.]Two points to ponder when using uplink NEXRAD Point One: The screen refresh time for uplink NEXRAD images ranges from one to six minutes or more. Given sufficient heat, moisture, and atmospheric disturbances, thunderstorms can form in seconds. Once the lifting action has begun, towering cumulous clouds can begin rising at more than 8,000 feet per minute.
Unlike live weather radar, uplink NEXRAD simply cannot keep up with the rapid development of thunderstorms. Point Two: Uplink NEXRAD images, like live radar, display precipitation only. Recall, thunderstorms produce rain during their mature phase only. It is not the rain that hurts us in airplanes (unless it is freezing rain or hail). Instead, it is the convection or turbulence that ultimately gets the unwary pilot. This convection forms BEFORE rain is produced. Neither uplink NEXRAD nor live radar can "see" convection/severe turbulence!
Strikefinders/stormscopes (called spherics) are able to detect these discharges and display them on a screen or multi-function display (MFD). In summary, it takes two kinds of in-flight weather avoidance devices to provide pilots with any reasonable hope of avoiding thunderstorms. One is LIVE radar and the other is spherics (strikefinder/stormscope). The only reasonable role for uplink NEXRAD is to alert pilots to distant areas of precipitation only. Keep in mind that this kind of information is generally available to pilots having Internet access long before they leave the ground. Is uplink NEXRAD weather useful to the pilot? Sure. Any such weather information is helpful, but it should never be depended upon to confirm the absence of severe weather immediately ahead! It simply cannot do that. A big thanks goes to OTA reader, Keith Gutierrez, of Plano, Texas for sharing his findings with us! Flight Students . . . count the training costs carefully!
Typical training route options range from hiring an independent CFI at the local aerodrome, to enrolling in an FAA approved Part 141 flight school, to affiliating with a local community college who partners with a Part 141 school, to enrolling in a four-year aviation college that provides both an aviation-related academic degree and all of the requisite pilot ratings. Then there is the "academy" model. Here, students pay a very large, up-front fee of $35,000 or more, train intensively, then come out with their ratings but no academic degree. Each of these training routes possess advantages and disadvantages. The greatest difference, however, is likely to be found in the area of total training costs. What is REALLY required to obtain that airline or corporate piloting job? If you reduce to total requirements to compete effectively for a pilot slot in the professional world of aviation to their lowest common denominators, there are only three basic requirements that count. These requirements are:
Back to the training routes . . .
Last year, for example, I recommended a well-known four-year aviation college in New England to one of my young students pursuing an airline career. Sifting through the complex economics given to her by the college's admissions and flight departments, she discovered that she was paying $250 per hour for a Cessna 172 (wet) including the instructor! Worse, on some days when instructors where being called in on "overtime" by the college, she was forced to pay the instructor's overtime rate! Sadly, this young lady exhausted over $50,000 in loans before having to drop out at the end of her freshman year with only her private pilot certificate and a few college credits to show for it. "Caveat Emptor" (Let the buyer beware)!
On the other hand, you could pursue a couple years of study at a nearby local community college in accounting or whatever, then transfer to a four-year college and complete your degree in any major field you like. As you are doing this, obtain your pilot ratings at a local airport with a seasoned flight instructor. Next, begin working for a year or two as a CFI, then do a stint in the Air National Guard flying C-130s or KC-135s. This route could get you into the right seat of a B-737 in a major airline or in a corporate Gulfstream far faster and at much lower cost than the aviation college route. Remember, professional piloting jobs require just three items: (1) requisite pilot ratings; (2) logged PIC flight hours; and (3) college training. The matter of quality training Any regular OTA reader recognizes the importance of obtaining the highest quality flight training available. It could save your life. This goes without saying in general aviation, especially in non-professional, single-pilot operations.Remember, however, that airline or corporate-bound pilots will be receiving "gold standard" aircraft-specific flight training shortly after they are hired. Any gaps or omissions in their primary training will be quickly filled. They will then be given several years of "on-the-job" training flying as a first officer, followed by rigorous recurrent training every six months. In summary, we should always pursue the best kind of flight training we can afford, but count the costs carefully. There are many training routes that can lead to the same high-paying flying job! To Prime . . . Or Not to Prime??
Assuming there is uncontaminated fuel in the tank and it is reaching the engine, the ignition system is working properly, and there are no faulty mechanical issues, the engine should fire and run smoothly IF the correct combination of fuel and oxygen is reaching the cylinders. But what if doesn't? Do I prime? How many strokes? Should I be pumping the accelerator pump? All good questions . . . . and ones that baffle newbies and experienced pilots alike. So what do I do? Ask this question to a dozen experienced pilots and you'll likely receive a dozen different replies. Some will have us give it precisely three shots of prime before cranking. Others will have us pump the accelerated pump twice, then get out and perform the walk-around inspection before cranking. Still others will immediately assume a flooded engine and will have us crank with the throttle full open.
It goes something like this: "Prime twice, crack the throttle exactly one inch, then advance the throttle slowly. On the first pop, pull the throttle to full idle, then look north, repeat two Hail Marys, then pull on your right ear and immediately stop cranking." Works every time, he insists! Don't you love experts like that? So what is the correct starting procedure? Let's go back to Lesson One in the private pilot syllabus where we learned about the Pilots' Operating Handbook (POH). The POH provides basic guidance on how to start both a cold and a hot engine, and sometimes even a flooded engine. This use of the "POH Doctrine" reinforces the notion that every make and model engine has unique starting procedures. In most cases (certainly not all), the folks who wrote the POH generally know what they are talking about [Hint: remember the lean-of-peak debate of a decade ago?] But it still will not start? Okay, now it's time for a little introspective thought about chemistry and physics. Fuel, air, and spark in correct proportions and at precisely the right time is generally all that are required to get the reluctant engine going. But it still doesn't want to start? I asked Mike Busch of The Savvy Aviator to help us out here. Here is what he had to say:
For those few OTA readers who do not know of Mike Busch, he not only gave birth to AVWEB, he is the man behind The Savvy Aviator. Mike spends most of his weekends traveling coast-to-coast in his Cessna 310 conducting two-day seminars on the care and feeding of your aircraft. Aero-News.Net Features OTA in Podcasts
"FSS Privatization" and the "16 Hour Rule" are the latest in a series of podcasts I have been doing with Aero-News.Net's Paul Plack. You can hear, or download for later listening, these 15 minute interviews and any of the previously conducted podcasts by clicking on the titles below: By the way, Aero-News.Net is a FREE daily online publication that is packed with aviation related news. It is the first thing I read every morning. You can log on to Aero-News.Net and subscribe for your free subscription by clicking HERE. Winds Awareness
Wind, like oxygen to living creatures, is the elixir of flight. Whether around the wings of an airplane or over the rotors of a helicopter, wind is what keeps us aloft. Wind is also a very dangerous force that can render an aircraft temporarily uncontrollable! Job #1 for pilots is to ALWAYS be aware of what the wind around us is doing. This is particularly important when operating either close to the ground or when flying over, around, or through mountainous areas. What is a mountain?
Wind currents flowing over mountain ranges and peaks take strange twists and turns, often building in velocity as they careen along their way. Invisible rotor currents on the downwind side of mountain ridges have the potential of upsetting even transport-size aircraft. Flatlands pilots operating for the first time through these mountainous areas would be well-advised to investigate the principles of mountain flying. Lessons learned could save a life! Wind awareness also applies to the flatlands as well. Every takeoff and landing is influenced to some degree by winds. Not knowing where winds are coming from is like tip-toeing across a fast moving creek without knowing where the slippery rocks are! One wrong step and you could get wet (or worse)! Help Spread the OTA Word!Please tell every pilot you know about Over the Airwaves! Click on the button below.Click HERE to sign up for free weekly reminders of each upcoming OTA issue.Understanding the MSA Circle on the Instrument Approach Plate
Very simply, the MSA circle is intended to provide emergency altitude information to the instrument pilot. In other words, when all else fails, flying no lower than the MSA altitude printed in the box inside the circle provides a minimum of 1,000' clearance above all obstructions within the mileage range shown on the outside of the circle, e.g., 25nm from the Teterboro VOR. Instrument pilots should include the MSA circle information in their approach plate briefing before commencing any instrument approach. More on Autopilot Dependence . . . A potentially fatal crutch!
And why not? Cross-country navigation has been reduced to a couple of button pushes. Electronic checklists scroll before us like the credits following a Hollywood motion picture. There are even colorful reminders to check things like density altitude before rolling to the active runway! This new technology goes well beyond
fancy glass panels. Diamond Aircraft's DA42 Twin Star,
for example, has reduced the six power levers
This aircraft even features an automatic systems check that has reduced the typical interior pre-flight inspection to a single button push! Fast-talking salesmen! "Get in, fire it up, roll down the runway, pitch up . . . then click on the auto-pilot. What could be easier," says the fast-talking salesman? Okay, so reputable aircraft sales departments are not making it sound this easy, but some of us pilots are wanting to believe it is. That could be one reason why new airplane sales are at an all-time high! The net result of this mistaken belief is that owners of these new aircraft are placing their lives in the hands of this new technology instead of investing in the development of effective stick and rudder skills. Over-dependence on the autopilot is a good example of this. Just how bad is this problem? One of my many recent training flights to the New York City airports gave me opportunity to witness first-hand a pilot who had excellent autopilot skills, but who was a bit challenged in the hand-flying department. We were approaching one of the NYC airports in IMC weather. The pilot dutifully loaded the approach in use into the GPS box in preparation for landing. The NY TRACON controller then instructed us to fly to an intermediate fix that was not included in the selected GPS approach procedure. I watched as the pilot entered this new fix into the GPS unit while he was fiddling with the autopilot to turn the airplane towards this fix. The controller than gave us our clearance to commence the approach. When turning on to the final approach course, we both noticed that the CDI (course deviation indicator) heading on the large primary flight display (PFD) did not match the printed approach plate. I nudged the pilot, pointing out that we did not have time to troubleshoot the problem. He quickly agreed. I called the controller and requested an approach cancellation and asked him to give us a new heading and altitude to fly. The controller instructed us to turn left to a heading of 090 degrees and climb to 4,000 feet. I then suggested to the pilot that he turn off the autopilot and to comply immediately with the controller's instructions by hand.
"I have it," I said to the pilot as I took control of the airplane and leveled the wings and pitched us down to a Vy climb rate. The pilot was visibly shaken by what had just taken place. A combination of IMC weather, very busy airspace, and some difficulty programming the GPS resulting from an unexpected ATC issued heading change left the pilot far behind the airplane at a very critical phase of flight. It was clearly evident that had he been by himself the outcome could have been disastrous. The pilot, while proficient with autopilot flying, proved to be dangerously under-prepared to deal with the controller's instructions when called upon to manually fly the airplane. A valuable lesson learned . . . I gave the controls back to the pilot as I requested vectors to an airport outside of the NYC Class B airspace. We landed, had lunch, and discussed the flight that had just taken place. The pilot learned a valuable lesson. That is, flying on the autopilot is easy, but when things go wrong, the autopilot may not be there to help. More importantly, the safe outcome of every flight still depends upon having adequate stick and rudder skills to control or recover the airplane from any flight attitude. Having lots of "bells and whistles" in the cockpit is fun but, in the end, we must be able to fly safely without them.
If you found Over the Airwaves helpful to you personally and/or beneficial to general aviation and would like to support its continued publication, please consider making a donation to the effort. Simply click on the button below to access a secure link through which PayPal, credit card, and personal check donations can be made.
Personal Checks: If you prefer to send a personal check, you can do so by making it payable to "Over the Airwaves" and mail it to: Bob Miller 124 Delaware Street Tonawanda, NY 14150
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and for pilots all over the globe. Aggravated Stall vs. Spin Recovery Training
How, you ask? Answer: Practice aggravated stalls! An aggravated stall is one that occurs while the airplane is in a yaw. The procedure goes something like this. Retard the power to idle. Pitch the airplane up into a full stall break. At the break, apply left or right rudder. The airplane will quickly yaw in the direction of the applied rudder. As it does so, apply immediate corrective control inputs:
The key, of course, is to complete this recovery technique BEFORE the airplane completes the first full turn. Keep in mind that most aircraft certificated in the normal category must be capable of spin recovery within the first turn of a spin. Practicing or teaching aggravated stalls with an experienced CFI onboard is an excellent way to develop awareness of imminent spins. With this awareness, inadvertent spins, whether up high or in the traffic pattern, can be quickly prevented. New York City Class B Tours: An IFR Skill Sharpening Experience! My weekly flights into the New York City Class B airports have been one of the most "eye-opening" advanced flight training exercises of my career! This big league environment reveals the best and worst of every pilot.
Okay, why race down the final approach course? In most places, the controller doesn't ask for our best forward airspeed on the approach. When going into a busy Class B airport, going slow means we'll likely be turned off the approach long before reaching the final approach fix, sometimes twice, or even three times. How do you spell "low fuel advisory?" Putting a fresh edge on your instrument skills NYC's Class B airspace is arguably the most intense learning environment any pilot could hope to experience. With five of the world's busiest airports located within 14 miles of each other, it is a major challenge simply getting into or out of this bee-hive of aerial activity. The real challenge, however, occurs when hop-scotching between each of these airports! It is no over-statement to suggest that lightening reflexes come in handy when a harried NY approach controller fires off a series of mind-bending vectors to sequence you between "heavy" jet traffic." How do you spell "wake turbulence?" Is this training a GA abuse of the sacred world of airliner operations? The question of conducting flight training in the busiest airspace in the world has come up . . . more than once. It's a good question.
You know the answer without asking. Any flight training when properly conducted should be transparent to the real-world operations going around you. The end-result is a better trained pilot operating in the system. Please click HERE to learn more about this NYC Class B airspace training.
If you repeat an old saw often enough, it eventually becomes truth. Such can certainly be said about those who claim that stall/spin events in the traffic pattern as being unrecoverable. In truth, when performed properly, spin recovery can be completed in as little as 600 feet.
So says Joe Shelton, writing in the October, 2007 issue of IFR Magazine following his upset recovery training at Sean Tucker's Tutima Academy of Aviation Safety. Better than that, Shelton writes that, "Incipient-spin recovery started upon the first wing drop can take as little as 100 feet."
One fatal stall/spin accident a week!
Both the FAA and AOPA's Air Safety Foundation have pretty much put the matter of required spin training in the Private Pilot Practical Test Standards to rest by insisting that stall/spin events occurring in the traffic pattern are not recoverable. Since this, they say, is where most such events occur, why practice a maneuver that is, in a word, unrecoverable? Sadly, they are wrong, dead wrong!
Okay, so we OTA readers are not going to win this argument, nor are going to see any changes pertaining to spin training in FAR 61.56. The forces against us are simply too great. But we can do what I and many thousands of other GA pilots have done. We can go out and get some truly effective spin and other forms of upset training on our own in spin certified airplanes.
We do not have to go far for this training, either. Most Cessna 152s and 172s as well as Piper Cherokees operating in the utility category are suitable for such training. Combine this with an experienced CFI and we could have an afternoon of both fun and learning. More importantly, it could save our life!
Regrettably, we have far too many old saws regarding the safety of flight. Beliefs that a hood or similar view limiting device in the cockpit or that a stationary flight simulator can somehow replicate the real world of IFR is a classic example of an old saw that SCREAMS for debunking.
Another old saw is that a freshly minted, 19 year old CFI with a total of 50 hours solo time can impart sufficient wisdom to future pilots to keep them safe aloft shouts even louder for debunking!
I wonder what the NTSB members who investigate our daily fatal wrecks might say about these old saws?
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