Texas Top Aviation has added a new member to our instructing team. Stephanie Mertz was hired in March 2019 and will be specializing in G1000 & Instrument instruction.
Stephanie graduated from LeTourneau University in Longview, Texas with a degree in Aeronautical Science, earning her commercial single and multi ratings while there. She began her aviation career in Ontario, California flying a Pilatus PC-12 for charter and medical trips. While operating the PC-12, she gained valuable experience flying all over the US and Mexico.
In 2013, Stephanie moved back to East Texas with her husband where she worked as a contract pilot flying a variety of Citations as well as a Falcon 10. A few years later, she became involved in her local Ninety-Nines chapter and joined their mentorship program.
After earning her CFI, CFII, and MEI, Stephanie returned to her alma mater to pass on her flying passions to college students through flight instructing. After a year of teaching at LeTourneau, she and her husband, with their first baby in tow, moved to the Austin area. Now she is instructing with Texas Top Aviation while acting as a mentor for other women working on achieving their flying dreams.
We’ve all heard it said…”reduce the throttle by no more than 1-inch every minutes to ensure you don’t shock-cool your engine”. Does this advice apply to a PA46 engine? Can a PA46 engine (Lycoming 540 or Continental 520/550) really be shock-cooled? How should the engine temperature be managed?
Metals expand and contract with temperature, and the various metals in an air-cooled aviation engine expand and contract at a different rates. Shock-cooling supposedly occurs when the engine changes temperature quickly and the different metals in the engine cool (and therefore change shape) at different rates. When the change occurs dramatically supposed scoring, rubbing, and marking of the metal can occur, which can cause catastrophic results.
So, let’s back to the original question…can a PA46 engine suffer shock-cooling and should a pilot operate the engine so as to avoid shock cooling? Simply put, I’ve never seen nor heard of any piston PA46 engine suffer shock-cooling. In 5000+ hours flying the piston PA46 and 16 years of flying/managing/training in the Malibu/Mirage/Matrix, it simply has not happened to me nor anyone I know. Does it mean that it cannot happen or has never happened? No. But, it is certainly not a prolific threat to our fleet.
Should the owner/pilot operate the engine with a cautious eye cast toward the potential of shock cooling? Well, sort of…but, let’s flesh this out. My suggestion is that a pilot should operate the engine with conservatism in movement of temperature, but only because this is a good operating practice with any machine, and any flying machine is (by definition) not “overbuilt”. And, there are many ways to change the temperature of the engine…not just by reducing power. Here’s a partial list of ways to cool your PA46 engine:
Reduce power: Obvious…yes. When the engine produces less power, less heat is generated. Reducing power in a piston engine will almost always result in less temperature.
Lower the nose: By descending (and leaving power in a cruise setting) the airspeed will increase and cool the engine.
Enrichen the mixture: Fuel has a cooling effect on the engine, so the richer the mixture the cooler the engine.
Lower the landing gear: Yes…you read that right…engine cooling will occur when you lower the landing gear because more air will flow over the cylinders. Notice the landing gear doors on the PA46 have air louvers. Air flows into the engine nacelle on the front, passes down through the cylinders (along with the oil cooler, intercoolers, and other components) and then out the louvers of the closed gear doors. When the landing gear is lowered the “back door is opened” and a LOT more airflows over the cylinders.
My suggestion is that a pilot only perform ONE of these actions at a time when beginning a descent. This suggestion was presented to me by Chad Menne (Owner, Malibu Aerospace) some time ago and I’ve operated engines this way ever since. If you are at a higher altitude and simultaneously reduced the power, lowered the landing gear, started a big descent, and enrichened the mixture in one flail swoop, I think there’s a chance that your engine would suffer some negative effects that could be called “shock cooling”. So, when you do start a descent, pick one “cooling action” to accomplish at a time. I’m sure you’ll not hurt your engine.
Simply put, shock cooling is not a huge factor in the PA46 community, and a PA46 pilot does not need to be overly cautious. The “one inch per minute” rule may apply in some other airframes, but in the PA46 world it is not applicable.
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.
We’ve all heard it said…”reduce the throttle by no more than 1-inch every minutes to ensure you don’t shock-cool your engine”. Does this advice apply to a PA46 engine? Can a PA46 engine (Lycoming 540 or Continental 520/550) really be shock-cooled? How should the engine temperature be managed? Metals expand and contract with temperature, and…
Austin Executive Airport opened a control tower on Friday, February 23rd 2018. The airport is now officially Class D airspace. The charts and A/FD are not updated yet to reflect the tower, but there is a NOTAM with the tower and ground frequency information. The tower hours are from 6am to 10pm. The weather frequency remains the same.
Make sure you check those NOTAMs if you are headed to KEDC anytime soon!
KEDC Tower Frequency: 120.3
KEDC Ground: 119.45
Austin Executive Airport opened a control tower on Friday, February 23rd 2018. The airport is now officially Class D airspace. The charts and A/FD are not updated yet to reflect the tower, but there is a NOTAM with the tower and ground frequency information. The tower hours are from 6am to 10pm. The weather frequency remains…
A brand-new event for Lancair owners, the 2018 Great American Lancair Rally will be a multi-stage “grand tour” of the Western US. Starting and ending in Central Texas, the Rally will take place September 24th through October 5th 2018.
The Rally will begin in Uvalde, TX (KUVA) on September 24th at the Lancair headquarters. There will be 6 legs, with stops at:
Sedona, Arizona (KSEZ)
Paso Robles, California (KPRB)
Redmond, Oregon (KRDM)
Spanish Fork, Utah (KSPK)
Taos, New Mexico (KSKX)
San Marcos, TX (KHYI)
At each stop, there will be food, drinks, and fun for everyone.
Lancair plans on making instructors available to pilots who would like any kind of training along the way. Hank Gibson from Texas Top Aviation will be one of the instructors available.
Lancair plan to make the Great American Lancair Rally an annual event, with the 2019 Rally spanning the eastern half of the country.
The Great American Lancair Rally is open to all Lancair owners, potential owners and interested aviators. Fly a different airplane? All makes and models are welcome!
For more information & to register, check out the 2018 Great American Lancair Rally’s website.
A brand-new event for Lancair owners, the 2018 Great American Lancair Rally will be a multi-stage “grand tour” of the Western US. Starting and ending in Central Texas, the Rally will take place September 24th through October 5th 2018. The Rally will begin in Uvalde, TX (KUVA) on September 24th at the Lancair headquarters. There…
I am on a mission in flying for my head to be as comfortable as possible. I’m currently going through the process of experimenting with different ANR headsets to see which ones squeeze my head the least (which I’ll be writing a future article about). In the meantime, I decided to focus on sunglasses.
I wear glasses (can’t do contacts anymore since they irritate my eyes), so anytime I have a headset on, I have frames running underneath my ear cups. I had a pair of prescription sunglasses for years that were okay, but still caused soreness above my ears after more than 3 hours of flying. I routinely fly 4-5 hours a day in training folks, so I had to find a better solution.
I saw an ad in Flying Magazine one month for Flying Eyes sunglasses. It was a relatively new company with a cool concept. A pilot started the company with the goal to create as thin a pair of sunglasses frames as possible to increase the comfort and decrease the ANR loss when wearing sunglasses. What the company came up with is pretty cool.
The ultra-thin frames on the all the different Flying Eyes models are made out of Resilamide. The material is so strong that the frames can be bent back and forth while not breaking. The company even brags that the frames are virtually unbreakable. I had to try these out.
I ordered a pair of the Golden Eagle Sport sunglasses. The process of getting prescription lenses in them was no big deal and took about a week. The eyeglasses shop initially thought the shape of the lens could be an issue, but it proved no problem at all. The lens manufacturer even managed to chip the frames, but Flying Eyes sent a new set of frames for free, even though it was not at all their fault.
In about a month and a half of flying with them, they are very comfortable. Some squeeze on the side of my head after extended periods of wear underneath a headset, but I’m exploring headset options currently (see above). Much improved over my last set of sunglasses.
Flying Eyes offers several different frame models, some of which are prescription compatible and some which aren’t. The Golden Eagle Sport frames run about $180. Orders can be placed on the Flying Eyes website.
Ordering new sunglasses from Flying Eyes? Use this link to receive 10% off your order.
I am on a mission in flying for my head to be as comfortable as possible. I’m currently going through the process of experimenting with different ANR headsets to see which ones squeeze my head the least (which I’ll be writing a future article about). In the meantime, I decided to focus on sunglasses. I…
I got a call today from a friend asking me about oxygen requirements. That got my brain pondering about the different items the FAA would like all pilots to know. I did a little refreshing and found several other tidbits directly from the FAA that I thought worth sharing. No matter what you’re flying, I think these apply to all of us.
First off, what are our general oxygen requirements? If you jump on over to the FAR’s and take a look at 91.211 you’ll see:
1. At cabin pressure altitudes above 12,500ft MSL to 14,000ft MSL, pilots
required to use oxygen unless the segment is less than 30 minutes of flight.
2. At cabin pressure altitudes above 14,000ft MSL, the crew is required to use
oxygen.
3. At cabin pressure altitudes above 15,000ft MSL, each occupant must be provided the use of oxygen. This doesn’t necessarily mean they have to use it.
Things get a little more in depth when you get to pressurized aircraft.
These requirements are also listed in 91.211:
1. If you’re flying above Flight Level 250, a 10 minute supply of oxygen is
required for each person onboard.
2. If you’re flying above Flight Level 350-410, and one pilot leaves their seat, the other pilot will be required to wear an oxygen mask, unless both seats are equipped with quick-donning oxygen masks.
There are three basic components to any oxygen system in an aircraft: the storage system, the delivery system, and the mask or cannula. First, there are several types of storage systems.
Gaseous aviators breathing oxygen is the first. This is the standard green tank that everyone is familiar with. There are two types of tanks. Either the high- pressure with 1800-2200 psi or the low pressure tank with 400-450 psi. The major issue with these and General Aviation aircraft is weight. Some of these tanks can get bulky and heavy and therefore don’t work for everyone.
Liquid aviators breathing oxygen or LOX is another form of storage. The major advantage of LOX is that it has a 900 to 1 expansion ratio, meaning that 1 liter of liquid oxygen can be expanded into 900 gaseous liters of Aviators Breathing Oxygen. The disadvantages of LOX are they are extremely volatile and have to be stored at -197F. If it comes in contact with exposed skin, severe frost bite can occur.
Sodium chlorate candles or oxygen generators have a weight advantage like LOX. They’re essentially a canister that when activated mix sodium chloride and iron powder and produce oxygen. They general have a 600 to 1 expansion ratio, which goes back to the weight savings. However, once these are started they are very hard to stop. Another disadvantage is these devices produce a fair amount of heat, so proper precautions need to be taken.
Next are the delivery systems. The main systems are Continuous Flow, Diluter Demand, and Pressure Demand. Continuous Flow, is exactly as it sounds. The oxygen is allowed to flow continuously from the tank to the user. The benefits of continuous flow are you don’t need a complicated mask or regulator. The downside to this system is since it continuously pumps oxygen, you’re wasting oxygen when you exhale. Most of continuous flow systems are used on aircraft that generally fly below 28,000 feet.
Diluter Demand was designed to fix the negative of the Continuous Flow systems. Diluter Demand only sends oxygen to the user when the user inhales. The system also allows cabin air to be introduced in, sending the perfect mixture of oxygen to the user when needed. These systems are very efficient and generally tend to be used up to 40,000 feet.
Pressure Demand is designed to essentially “over inflate” the users lungs. This will basically pressurize the the users lugs and allow the user to fly above 40,000 feet. This is needed at flights above FL400 because 100% oxygen without positive pressure will not suffice.
The final portion of the oxygen system is the mask or cannula. Nasal cannulas generally are more comfortable and are regulated to 18,000 feet service altitude. Masks come in a couple different variants. From re-breathers to quick-donning, most masks accomplish the same task with a few small differences. Quick-donning must be able to be put on within five seconds and are rated up to FL400.
Since that was a lot of information, what does all of it mean to you? Most fair weather flyers will never run into any of this. However, the high performance owner/operator will run into oxygen use situations a fair amount. Taking the family up to Colorado on a ski trip, jumping up to 12,500 feet to get above some weather, or flying above 5,000 feet at night on a long xc are all situations where you may want to have oxygen on board.
If you are planning on doing any of this type of flying or are currently doing these types of flights, training is a must. If you’ve never been in an altitude chamber, I would highly recommend it. In college, I went with a group to Oklahoma City to the FAA’s headquarters where they hold a class on Hypoxia and High Altitude flying. It’s very informative to be in the chamber as it simulates being oxygen deprived. You get to see how you’ll react and what kind of symptoms you’ll have when in a loss of oxygen situation. Each person has different symptoms, so it’s important to see how you will react.
It’s also good to fly with an experienced instructor. Finding an instructor who will allow you to learn in a safe environment is worth its weight in gold.
Ryne Bergren is currently a First Officer with Mesa Airlines in the CRJ 900. Ryne has experience in many different areas of aviation, from corporate to airlines to teaching to ferrying across the Atlantic Ocean. His passion is for all things that travel across the big blue sky.
I got a call today from a friend asking me about oxygen requirements. That got my brain pondering about the different items the FAA would like all pilots to know. I did a little refreshing and found several other tidbits directly from the FAA that I thought worth sharing. No matter what you’re flying, I…
The Piper PA-46 series, which includes models like the piston engine Piper Malibu and Piper Mirage, and the turboprops Piper Meridian, M500, and M600, is a popular choice for private pilots and business aviation. Known for its impressive speed, range, and pressurization, the PA-46 is a very capable single pilot aircraft. However, like all high-performance aircraft, it presents its own set of challenges and risks, especially when pilot error or adverse conditions come into play.
The 2024 PMOPA (Piper M-Class Owner’s and Pilot’s Association) Convention was the first weekend in November and one of the sessions every year is the PA-46 Safety Review. Sadly, in 2024, the accidents involving various PA-46 models pointed out several areas related to decision making that all pilots need to put be aware of. These accidents highlight critical issues in weather awareness, pilot training, and decision-making, and they provide valuable lessons for other pilots in any type of aircraft.
Overview of the 2024 Piper PA-46 Accidents
The Piper PA-46 is generally regarded as a reliable and capable aircraft, but the safe outcome of a flight often times depends on the pilot’s decision making. There always can be mechanical malfunctions, but those still require good pilot decision making to be able to walk away from the accident.
In 2024, multiple accidents occurred involving different variants of the PA-46, with many of the accidents occurring during critical phases of flight like takeoff or landing. Some of the key factors contributing to these accidents included:
Weather Challenges: In several cases, adverse weather conditions, such as low visibility, thunderstorms, or high winds, contributed to accidents. Despite most PA-46’s being equipped with NexRad and weather radar, pilots sometimes underestimated or misjudged the weather risks.
Pilot Decision-Making: A recurring theme in these accidents was pilot error—specifically, poor decision-making when faced with challenging conditions. In some cases, pilots continued flights despite deteriorating weather or failed to react appropriately to emergency situations.
Mechanical Failures: As with every airplane, systems fail on a Piper PA-46. Several accidents were due to engine power loss. Proper training teaches pilots how to have the right mindset and skills to handle those engine power loss situations, taking a bad situation and having the best possible outcome due to good decision making and gliding skills.
Three Key Lessons for Pilots
The Piper PA-46 accidents of 2024 serve as valuable reminders about the importance of pilot preparation, decision-making, and risk management. Here are three critical lessons pilots can take away from these accidents:
1. Prioritize Pre-Flight Weather Planning
Poor weather conditions were a significant factor in some of the crashes in 2024. Pilots of high-performance aircraft must place a strong emphasis on weather pre-flight planning, especially when flying into regions prone to rapidly changing weather or severe conditions and across frontal systems. Pilots should:
Stay up-to-date with weather briefings before and during the flight, including calls to Flight Service Station if there is serious weather along the route.
Be proactive in altering flight plans or delaying departures when weather conditions become unfavorable.
Utilize onboard weather radar and other tools to monitor changing conditions in real time and avoid nasty looking weather systems. ADS-B and XM Weather are delayed information. They are not meant to be used to find holes through storm systems.
Finally, don’t try to shoot through holes! They are called sucker holes for a reason.
2. Master Emergency Procedures
Pilots of all aircraft, not just PA-46 models, need to practice engine-out procedures multiple times a year with an instructor, not just at recurrent training. The goal is to make emergency procedures second nature which creates the right mindset to handle the emergency, creating a much better outcome. Training should focus on:
Engine-out procedures immediately after takeoff, climbing out at low altitude, and at cruise.
Performance with the propeller feathered and unfeathered, recognizing how the feathered prop increases glide range.
Practicing forced landings and other emergency scenarios regularly to build confidence and competence.
3. Always Plan for an Emergency Landing
It is very important to know your options in the event of an emergency. When flying over mountainous or remote areas, pilots should always have a contingency plan for where to land if something goes wrong. An emergency engine out brief should be a part of every pre-takeoff briefing to put the pilot in the right mindset. Pilots should:
Brief an engine failure on the runway, low altitude, and at an altitude that allows for a safe return to the airport in the event of an engine failure as part of every pre-takeoff briefing.
Study the flight route in detail and identify suitable emergency landing sites along the way, especially when flying in areas with limited options.
Consider the terrain, weather conditions, and available options in the event of an engine failure or other emergency.
Use terrain awareness and other onboard tools to help identify suitable landing areas in real-time, including the ForeFlight Glide Advisor.
Conclusion
The Piper PA-46 series, while a capable and reliable aircraft, demands a high level of skill and preparation from its pilots. The accidents in 2024 serve as a sobering reminder of the critical importance of weather awareness, emergency training, and proper flight planning. By learning from these accidents, pilots can make better decisions, have the right mindset, and reduce the risk of similar accidents in the future.
By prioritizing weather awareness, mastering emergency procedures, and always having a contingency plan for forced landings, pilots of the Piper PA-46 can improve their ability to handle the challenges posed by these high-performance aircraft. These lessons are not just for PA-46 pilots, but for all pilots striving to fly safely and confidently.
The Piper PA-46 series, which includes models like the piston engine Piper Malibu and Piper Mirage, and the turboprops Piper Meridian, M500, and M600, is a popular choice for private pilots and business aviation. Known for its impressive speed, range, and pressurization, the PA-46 is a very capable single pilot aircraft. However, like all high-performance…
