The Flight Director as a Backup

ByHank Gibson

I’ve noticed that a lot of general aviation pilots tend to ignore the flight director on the attitude indicator.  A lot of pilots don’t even know what it’s there for or how to use it.  Talk to any airline pilot, though, and he or she will tell you how important the flight director actually is.

In most high performance airplanes, the flight director comes on when the autopilot comes on.  Essentially, the autopilot is following the flight director, which tells the autopilot where to go.  The flight director can also be used with the autopilot off, when hand flying an approach, for example.  By turning the flight director on, it will show you where you need to fly to stay on course and on glide slope.

Flight Director

The flight director is most often controlled by the autopilot controller.  The same buttons you use to put the autopilot in heading mode also tells the flight director to follow the heading bug when the autopilot is off.  When you move the heading bug (or change course on the GPS, depending on which mode you have selected), the flight director will show you when you need to turn and when you need to stop turning.  It directs your flight attitude, hence the name.

I recently discovered it’s a great backup when you have some instruments on the fritz.  I went on a long flight in a steam gauge Piper Malibu and the attitude indicator started reading erratically.  While flying straight and level, it would randomly indicate that I was in a 10 degree bank to the right, swing back and show wings level, then show a 3 degree turn left.  This went on for a while.  We were in VMC conditions, so legality wasn’t a problem, but it was kind of disorienting.

After a little while of this, the autopilot started acting up.  It would start oscillating the pitch up and down, making it seem like we were going through a moguls course in the air.  I ended up turning the autopilot off and hand flying the airplane.

This led to a conundrum, since my attitude indicator was unreliable.  I could definitely look outside, since it was VMC, seeing when I was level and when I wasn’t.  That would create a higher workload for me, which on a long flight like I was on, would lead to an increase in fatigue.  The solution?  The flight director!

I turned the autopilot off, but I left the flight director up.  It wasn’t referencing the bank angle that the attitude indicator was showing since the KFC 150 goes off of the turn coordinator.  So, if I just followed the attitude indicator, I could just keep scanning the instruments and relieve a little bit of my workload.

It actually worked really well.  By just following the flight director, I was able to stay on course and on altitude with only minor attitude adjustments whenever we hit turbulence.

So, if you’re attitude indicator and autopilot decide to stop working on you, then bring up the flight director, push the same buttons you would if you were using the autopilot, and it works as a great backup.

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  • Cirrus CAPS Saves Lives Again

    ByHank Gibson

    In July, a Cirrus SR22 suffered an engine failure in Houston after departing KIAH.  The CAPS system was deployed and the airplane came to rest in a neighborhood on the north side of Houston.  This makes CAPS save number 53 for Cirrus and no fatalities.  The initial NTSB report is below.

    N422PB CAPS

    14 CFR Part 91: General Aviation
    Accident occurred Tuesday, July 07, 2015 in Houston, TX
    Aircraft: CIRRUS DESIGN CORP SR22, registration: N422PB
    Injuries: 2 Minor.
    This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

    On July 7, 2015, about 1137 central daylight time, a Cirrus SR-22 single-engine airplane, N422PB, descended under the canopy of the cirrus airframe parachute system (CAPS) and landed in a residential neighborhood at Houston, Texas. The pilot and passenger sustained minor injuries, and the airplane was substantially damaged. The airplane was registered to and operated by AIRCCS, LLC; Humble, Texas, as a 14 Code of Federal Regulations Part 91 business flight. Day visual meteorological conditions (VMC) prevailed and a flight plan had not been filed. The airplane departed George Bush Intercontinental/Houston Airport (IAH), Houston, Texas, at 1133 and was destined for Austin Bergstrom International Airport (AUS), Austin, Texas.

    The pilot reported that during initial climb, he noticed the engine temperatures began increasing and he reduced power in an attempt to lower the engine temperatures. When the airplane was about 900 feet above ground level (agl) the engine began detonating, and soon after there was a complete loss of engine power. With no suitable forced landing areas the pilot deployed the CAPS ballistic parachute system and the airplane impacted terrain and came to rest upright next to a residence.

    An initial on-scene wreckage examination showed there was adequate fuel on-board. At the facility where the airplane had most recently been refueled, refueling unit records and a review of security camera video showed that the airplane had been refueled with aviation gasoline and not with jet fuel. Postaccident fuel quality checks of that fuel facility were satisfactory.

    The wreckage was moved to a different location and will be further examined. Several avionics components containing non-volatile memory (NVM), including engine performance data, will then be removed from the wreckage for examination and an extraction of useful data is expected.

    At 1053 the Automated Surface Observation System at IAH reported wind from 160 degrees at 15 knots gusting to 20 knots, visibility 10 miles, scattered clouds at 3,000 feet agl, broken clouds at 25,000 feet agl, temperature 31 degrees Celsius (C), dew point 24 degrees C, and an altimeter setting of 30.03 inches of Mercury.

  • Textron Aviation’s New Single Engine Turboprop

    ByHank Gibson

    An 8 seat, cabin class, single engine turboprop is set to come to market in 2018 from the new aviation conglomerate Textron Aviation (Textron owns Cessna, Hawker, and Beechcraft).  Details were announced last week at the European Business Aviation Conference and Exhibition.  The as yet unnamed aircraft will be equipped with Garmin’s G3000 avionics and will be outfitted with a GE 1,240 Shaft Horsepower engine.

    Cessna TurbopropThe GE engine will be equipped with a FADEC (Fully Automated Digital Engine Control) computer that will allow the pilot to make all necessary power adjustments using just one lever.

    Range will be about 1,600 miles at 285 knots, giving the airplane the same legs as a PC12 at slightly faster speeds, but a smaller cabin.  The cabin will be equipped with a belted lav if desired.

    To read more, check out the AOPA Article here.

  • Recurrent Flight Training

    ByHank Gibson

    As all pilots know, the Federal Aviation Regulations require licensed pilots to go through recurrent flight training in the form of a Flight Review every 24 months.  The regulations require 1 hour of ground review and a 1 hour flight.  This is all that a pilot has to do to legally maintain his or her VFR currency to fly alone in an airplane.  Of course, when passengers are aboard, the pilot has to have done 3 takeoffs and landings in the previous 90 days.

    What if the pilot in question hasn’t flown in 20 years?  All the regulations require is 1 hour of ground review and a 1 hour flight.  Kind of scary, isn’t it?  (Any instructor worth his salt would not, however, turn a pilot loose with just those flight review minimums if they haven’t flown in 20 years without an extensive amount of recurrent flight training)

    Now, a lot can happen in 2 years in between those flight reviews.  Regulations change, airspace is modified, and skills change (for the better or worse, most often for the worse over a period of not flying).   For a current pilot who flies once or twice a week, those minimums are no problem.  Here’s the thing, though.  Even those current pilots typically don’t do a lot of stall practice or emergency procedure practice on their own.  These are the most critical areas of flight and to only do them every two years leads to a lot of rust building up, sometimes even causing safety concerns in some instances.

    Recurrent Flight Training

    How to remedy this?  Scheduling recurrent flight training as often as possible with a good instructor who puts you through your paces.  Do this often enough and stalls will become second nature.  The stall warning horn goes off?  Well, lower the nose and add power.  Engine failure?  Switch tanks and set best glide.  Recurrent flight training allows you to become as familiar as possible with your airplane, allowing you to know what to do in every circumstance.

    What’s a good recurrent flight training schedule?  There are several options out there.  The WINGs program is a pretty good option, though you will only have 3 flight training sessions in those two years instead of 1, but it’s a good start.  In recent years, the FAA has put out Advisory Circular 61-98B encouraging pilots to begin personal currency programs for themselves.  The suggested schedule for VFR recurrent flight training is every 4-6 weeks.

    Faa safety team

    Texas Top Aviation highly recommends this suggested schedule, for both VFR and IFR.  The AC doesn’t have a specific recommendation for IFR recurrent flight training, but flying 2-3 approaches a month with an instructor helps keep pilots as proficient as possible in the IFR environment.   This way, the instructor can introduce circumstances in a controlled environment that simulate abnormal conditions that might possibly be encountered in flight.  If those abnormal conditions are encountered, then it will be second nature on how to handle them, leading to less accidents and safer flying habits.

    Try to schedule your recurrent flight training every 4-6 weeks and your piloting skills will stay top notch, keeping you safe and proficient in every circumstance.

  • Medical Reforms Get Passed

    ByHank Gibson

    On July 15th, the medical reforms that AOPA and many other aviation advocacy organizations had pushed so hard for were passed into law.  President Obama signed the medical reforms law on the 15th, but, before practical application of the law takes place, the FAA has to translate the law into regulations.

    Doctor

    What do the new medical reforms mean for medical certificates and flying?  First, you still have to get a medical examination at some point in your flying career.  Student pilots will still need an initial medical examination. Initially, for pilots who have held a medical certificate at some point over the previous 10 years, a new medical examination may not be needed (this still has to be regulated by the FAA so exact details aren’t known yet).

    So, if you’re medical certificate has expired but you have had one in the past 10 years, you qualify.  But, if you have had your medical certificate revoked, suspended, withdrawn or denied, you don’t qualify.

    Once that student pilot receives the initial medical certificate (or the experienced pilot decides to start flying again), all that needs be accomplished is to take a free, online course on aeromedical factors every two years and meet with a physician at least once every four years.

    There are some operating limitations that will be put into place for folks operating without a third class medical.  Pilot’s can operate aircraft with no more than 6 seats that weigh less than 6,000 pounds, can carry 5 passengers, and are able to operate in day or night VFR or IFR conditions.  Pilot’s may not operate for hire, nor climb above 18,000 feet or fly faster than 250 knots.

    It will take some time for the FAA to put the regulations in place, but the process has begun.

  • Breathing…It’s The Difference in Engine Performance

    ByJoe Casey

    The PT6 engine that’s found on the Jetprop and Meridian is designated a -21, -34,-35, or a -42A.  The Continental engine on a Malibu is either a TSIO 520 or a 550.  What’s the difference? Why should I care? Most pilots don’t understand the difference, but it’s pretty easy to understand…and it’s all about breathing.

    Whether a piston or a turbine, the engine has a ratio of fuel/air that works best.  For a piston model, we can make adjustments to this ratio by adjusting the mixture.  In climb we use a richer ratio to help cool the engine, and in cruise we lean the mixture to save fuel since we don’t need the extra fuel for cooling (due to higher speeds which cools the engine). In the turbine, the ratio is set and there’s nothing that can be done about it…except climb to a higher altitude.  But, more about that in a second..let’s go back to the piston discussion…

    Piston: A Continental 520 engine and the 550 engine are flown exactly the same.  On takeoff, both will develop 310HP (38″MP with the 520, 35.5″MP with the 550).  So, why would a pilot want a 550 in his airplane as opposed to a 520?  The answer is breathing.

    A 520 is named appropriately because the engine displaces 520 cubic inches of air with each complete cycle of all 6 cylinders.  To determine the displacement, just figure the bore (diameter of the cylinder) and the Stroke (how far the piston travels in the cylinder) and plug the numbers into this formula:

    CID = Bore X Bore X 0.8754 X Stroke X # of Cyl.

    Here’s the bore and stroke of the Continental 520 and 550 engine:

    TSIO 520:  Bore = 5.25″ and Stroke = 4″
    TSIO 550: Bore = 5.25″ and Stroke = 4.25″

    So, you can see the two engines are exactly the same except the 550 has a little longer stroke, and therefore displaces a little more air.  Said another way…it the sucks the air into the engine a little better.

    So, with this knowledge, the ability for the engine to breathe becomes a little more clear.  Both a 520 and a 550 will perform exactly the same until the point that a 520 simply cannot suck enough air and begins to develop less MP as a result.  For most 520 engines, this will happen somewhere around 18,000 ft.  But, it is dependent upon a myriad of factors including: health of the engine, altitude, temperature, and atmospheric pressure. When the 520 hits this point, the throttle can be full-forward, but the engine will not develop full MP, but some number that is less.  I’ve seen a max MP at FL250 in a 520 Malibu to be about 31″MP.  So, you can probably guess that the rate of climb will correspondingly suffer as the engine develops less MP.  How do we fix this problem?  Enter the 550…

    Since the 550 displaces more air, the engine will maintain max MP to a higher altitude.  When the 520 begins to develop less power at about FL180, the 550 engine will be able to continue to maintain 35″ at a higher altitude.  Make no mistake…the 550 will also hit an altitude where is cannot develop 35″MP, but this altitude will probably be nearly FL220.  So, the 550-powered Malibu will reach cruising altitude faster than the 520.

    But, at cruise both engines are pulled back to 30″MP.  So, either engine will deliver the same cruise speed because they are both able to develop 30″MP at any altitude.  Does it really matter if you’ve got a 520 or a 550 engine?  Answer: not much.  Both are excellent engines and both will deliver the airplane to the destination, but if the chosen altitude is above FL180, the 550-powered airframe will probably arrive a few minutes earlier.  Which would I want if I were purchasing an airplane?  It’s not a big enough deal, IMHO.  I’d select the best airframe/engine/prop combination and not put much weight into the 520 vs. the 550.

    Turbine world: So, how about the -21, -34/35, and -42A compare?  Here, there’s  big difference, but it’s still all about the breathing.  A -21, -34/35, and -42A are all derivatives of the famous PT6 family of engines, and all are designed to be 1000+SHP engines de-rated to fit the airframe.  For instance, the -42A engine is 750SHP when mounted on a King Air 200, but the same engine is derated to 500SHP when mounted on the Meridian.  Ditto with the -21 and -34/35 engines…all are de-rated.  So what’s the difference? Breathing…

    At the lower altitudes all will develop their maximum rated SHP, meaning they will all develop maximum torque.  And, down low there’s plenty of air to breathe so the engine has no problem developing that torque at a low ITT.  But, as altitude is gained, the engine must suck more air to develop the same torque, and the ITT goes up.  At some point in the climb (depending upon altitude, temperature, pressure, and IAS) the engine will not be able to produce max torque without exceeding Max ITT.  At this point, the engine cannot breathe any more (suck in anymore air), and the power (torque) developed falls off.  With the -21 engine, the power falls off quite dramatically because the engine simply cannot breathe well.  It is a smaller engine and more air cannot be forced into the compressor section.  For the rest of the climb the engine is “ITT limited” and the performance will suffer.

    The -34/35 engine is a little bigger and will develop maximum power (torque) to a higher altitude.  And, when the torque does drop off (as altitude is increased), the rate of decrease is less because it can breathe easier due to it’s larger size.  Guess what? The -42A will beat out the others and develop max torque to an even higher altitude.  With this decrease  in torque available also comes a welcome friend…less fuel burn.  Altitude is the friend of any turbine pilot, and he/she will climb to the highest altitude possible to save on fuel.

    The end result is the -21 powered Jetprop will cruise at 238 KTAS (in the summer) with a fuel burn of only 28gph.  The -34 will have higher torque than the -21 and will develop more SHP and will have a higher cruise (260 KTAS in the summer) with a correspondingly higher fuel burn (32gph).  The -42A will be breathing easily at higher altitudes, and will develop the most torque, but with a fuel flow of 39gph.  The Meridian (with the -42A) will not out-perform the -34/35 Jetprop in cruise purely because the Meridian is much heavier.

    Just remember…fuel flow in a turbine is always commensurate with its ability to breathe and a turbine’s ability to breathe is a function of the engine’s ability to breathe.

    With this knowledge…let’s check your understanding.  Answer this question: Will a Jetprop cruise faster in the summer or winter?  Remember, cold air is more dense than warm air, and an engine will develop power according to it’s ability to suck in air.  More air available, more power available.  Answer: Winter.

    A good analogy: I’m a Cross-fitter (meaning I do crossfit workouts a lot).  In the gym we have various workouts that test a person’s ability to perform.  Guess who usually does the best?  Right…the guy who can breathe the best.  A person is nothing more than an engine…we intake air and combine it fuel and burn it to develop energy.  In Crossfit, the person with the biggest engine (muscles that can develop power) that can sustain power (good aerobic capability) will win almost every time.  The only variables then are genetics (how well-made is the engine), flexibility (you’ve got to be able to get into the position), and skills (there are more efficient movements).  A good Crossfitter will work hard on mobility, skill, and try to increase the bodies ability to increase capacity through a tough workout.

    To get maximum performance, the pilot cannot change the engines skill or mobility (at  least not without an engine change!), but a thorough understanding of the how the engine breathes will help him/her use the power that is available to the fullest.

    Joe Casey’s aviation story began in 1990 with his first flight near Nacogdoches, TX in a Cessna 172. From lift-off, Joe knew he would have a lifetime passion flying just about anything that will leave the ground…He was completely hooked.

    Along with being an FAA Designated Pilot Examiner (DPE), Joe is an ATP/CFI-AHMG and Commercial Rotorcraft/Glider Pilot in the civilian world and also a UH-60/AH-64 Pilot-in-Command/Instructor/Examiner Pilot in the US Army Reserves.  His passion for the last 19 years, however, has been the PA-46 Malibu/Mirage/Matrix/Jetprop/Meridian. Has has amassed over 6,500 hours in various PA-46 airframes and believe it to be one of the finest flying machines available for the serious cross-country pilot with an eye for efficiency.

    Now, Joe has flown more than 12,200 hours in just about every imaginable environment. Whether providing initial/recurrent training in the PA-46’s, TBM’s, instructing in NVG’s in a UH-60 Blackhawk, flying the King Air series of airplanes, giving tailwheel endorsements, or taking kids flying for the first time, he simply loves flying machines and the people who fly them.

  • MMOPA Safety Foundation Training Videos

    ByHank Gibson

    The Malibu and M-Class Owner’s and Pilot’s Association (MMOPA) announced new Safety Foundation Training videos in September. The videos are aimed at both new Piper PA46 pilots and existing Piper PA46 pilots, all in the effort to fly the Piper PA46 to the highest and safest standards.

    Six videos have been released thus far, with the promise of more to come. The topics of the first videos are:

    • Instrument Approach
    • Visual Approach
    • Manual Gear Extension
    • Emergency Descent
    • Descent Planning
    • Takeoff and Climb

    Eventually, the goal is to release high quality training videos encompassing all aspects of Piper PA46 flying.

    To view the videos, you will need an MMOPA membership. The link to the MMOPA Safety and Education Foundation video page is: https://www.mmopasafety.org/education/

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