Winter Ops

ByAndrew Robinson

It’s summertime and the weather is hot! Over this dry, sunny season, winter flying is probably the last thing on your mind. However, now is the perfect time to start getting things in place for winter and that includes having a plan for taking care of your airplane.

Why are preparations for winter ops needed in the first place? Cold weather, especially during the engine start and warm up period, can be very damaging to your engine if precautions aren’t taken to ensure that safe temperatures exist inside the engine before you turn the key. I always thought that the biggest problem associated with cold weather was engine oil. The logic is since cold oil is thicker and less viscous as the temperature drops, it is not able to circulate quickly throughout the engine to provide proper lubrication upon starting.

While cold oil may be a factor, the introduction of multi­viscocity oils has greatly reduced that issue. The real problem is created by the different ways that various parts of the engine respond to heat. Because aluminum expands more quickly when heated than steel does, the pistons (made of aluminum) expand more quickly than the cylinders (made of steel). This can lead to scuffing on the sides of the cylinder barrel. In the same way, differential heating can reduce clearances which are designed to provide cooling oil to bearings and other vital engine parts, thereby causing damage which greatly reduces the life of the engine.

So how cold is TOO cold? Unfortunately, that is a difficult question to answer. Because there is so much variation between engines, airplanes, and environments, there really isn’t any one specific answer. An older, more worn out engine may actually be less susceptible to cold weather damage than a newer, tighter engine because its internal clearances are probably not as tight as they were a few thousand hours ago. I have heard of some people who preheat their airplanes anytime the temperature falls below about 40 degrees. For us northerners, this seems excessive. On our E33A Bonanza which has a Continental IO­520, we generally preheat the airplane when it is cold soaked in temperatures below freezing (32° F).

Here are a few of the best ways to get your machine ready for a cold weather flight:

  • Heated Hangar:­ Nothing beats a heated hangar for warming up an airplane. The warm air is evenly distributed around the engine and in the cockpit (your avionics and gyros will thank you!). The airplane will need to be in the hangar for a while in order to warm up the guts of the engine. Often, the easiest way is to have the airplane pulled in the evening before the planned departure and left overnight. Many FBOs will hangar airplanes overnight for a small fee and it is well worth the price. We almost always have our charter airplanes put into hangars overnight when on a winter trip to ensure that we don’t have any trouble when we depart the next day. This practice has the added benefit of keeping the airframe clear of any ice and snow that may accumulate before you are scheduled to leave.
  • Electric Engine Heaters­: Multi­point electronic heaters use heating pads that are placed around the engine in order to heat up the various components such as cylinders, the oil pan and crankcase. Most of these systems are designed to be activated by being plugged into a wall outlet with an extension cord. Preheating for a winter flight is as simple as going to the airport the night before and plugging it in. Two well ­known manufacturers of multi­point engine heaters are Reiff and Tanis. These systems are relatively inexpensive and can be a life saver if you regularly travel in colder climates. If an engine heater is the right choice for you, it is recommended to avoid less ­expensive models that heat only the oil pan.

 

Reiff system
Pictured above is the Reiff system. The heated bands go around the cylinder bases and the pad at the bottom of the picture heats the oil pan. Picture Courtesy of www.reiffpreheat.com

 

  • Covers and Blankets­: If it is especially cold or you have to preheat outside, having something to insulate the cowling and keep the wind out can be very useful. Regular blankets will work long as you can secure them in place. If you have an ongoing need for additional insulation, there are companies that make custom blankets and propeller covers to fit your airplane. If you are landing and then taking off again relatively quickly, using a few blankets and cowl plugs will work nicely to keep the engine warm while it is sitting outside. In a pinch, placing a couple of powered light bulbs in the cowling overnight with insulation on top can result in sufficient temperatures for starting the engine.

 

Bonanza Cover
Even with the multi­point electric heater, we still use a blanket while preheating to help keep everything toasty.

 

  • Forced Air:­ This method is used widely by FBO’s and flight schools. Hot air is produced in a portable heater and is then pumped into the engine compartment via the openings at the front or bottom of the cowling. This method has the benefit of not requiring any additional equipment to be installed on the aircraft beforehand and can be very effective provided there is adequate time for the engine to heat completely before removal.

 

Forced Heat
Pictured above is a Red Dragon engine preheater. Photo courtesy of Red Dragon’s website: www.flameengineering.com

 

  • Winter Baffles:­ When the air temperature starts to drop into the teens and lower, you may find it difficult to keep your engine temperatures warm enough in cruise flight. The problem is that the air entering the cowling inlets is so cold that it overcools the engine. The solution is to install additional baffling in the engine inlets to reduce the amount of airflow into the cowling. These additional baffles are usually just sheets of aluminum that are cut to the correct size and are bolted in and removed quickly and easily as needed. Some pilots swear by them while others complain that they can cause uneven cooling. If you have questions about winter baffling, I’d suggest talking to your mechanic about your specific airplane.

Winter flying can be extremely rewarding. After their hands thaw from pre­flight, a pilot is often rewarded with smooth air, improved performance and outstanding views. Just don’t forget to prepare the airplane for the cold. The preparation is often as simple as plugging in an extension cord or making a phone call to the FBO. So whether you live in the north or the south, take good care of your engine so that it can keep taking good care of you.

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  • Texas STOL Roundup

    ByHank Gibson

    Looking for a fly in this fall?  Check out the Texas STOL Roundup at the end of September in Hondo, KHDO.  Interested in entering?  All are welcome!  There are several different categories including LSA, Experimental, and others.  Come in for a fun weekend and see how short an airplane can be landed!

    There will be bands, a STOL seminar, and even a hangar dance.

    Fly in or drive in.  Camping will be available on the airport.

    For more information, you can visit the event website.

  • Flying the Hudson River Corridor

    ByAndrew Robinson

    Ever since I moved out to the Philadelphia area, the Hudson River corridor in New York City has become one my favorite places to fly. It’s hard to overstate the beauty of the city from low over the river. Every time I have a family member or friend come to visit, I try and take them over to see the city from the air.

    Each time I fly up the river I can’t believe that we are actually allowed to do so, flying below the tops of the buildings and close enough that you feel that you could reach and out touch them. The draw back to the Hudson River Corridor is that it can be busy, intimidating, and confusing. However, with some reading and preparation, the Skyline flight is easy to do and extremely rewarding.

    Having the right weather is an important first step. The second step is try to arrive during ideal lighting conditions. If possible, select a smooth, calm day to make it easier to maintain a track down the correct side of the river. I always try and target arrival at the city around sunset. The view is spectacular any time of day, but having the lights from the city while the sun is just setting gives the best viewing. I’ve also flown over and done the whole flight after dark, which is always spectacular.

    View of the World Trade Center

    The first method of flying the river is to utilize VFR flight following. If the controllers aren’t too busy, they will provide advisories to aircraft that request the Skyline. The nice thing about doing it this way is that the controller will clear you into the NY bravo airspace and keep you above the traffic flying the Skyline in the VFR corridor below. This is the method that I have always preferred as I enjoy the added benefit of the traffic advisories and it’s nice not to worry about position reporting on the radio.

    If you want to get flight following, head toward the corridor and request the Skyline route with NY Approach. (Remember to stay clear of the Bravo until you’re cleared in!) Once you’re cleared into the Bravo and approaching the corridor, they will hand you off to Newark/ LaGuardia Tower for traffic advisories over the river. I like to approach from the south and ask for a 180 over the George Washington Bridge. This allows me to fly past the city a second time before exiting the corridor over the VZ (Verrazano Bridge) and heading back toward home.

    In red is the path I typically fly. I descend to 1400’ and fly toward the APPLE intersection picking up the shoreline around Staten Island and hugging it until crossing the middle of the VZ. Newark normally clears me into the Bravo at 1400’ or 1500’ to fly up the corridor.

    Pros:

    • Better traffic Awareness
    • No position reports

    Cons:

    • Flying slightly higher reduces the view
    • If the controllers are busy, they may deny your request for advisories  
    • Can be intimidating to talk to NY Approach/ Newark/ LaGuardia 

    The other option is to fly in the VFR corridor. If you want to do it via this method there are just a few things you need to make sure you’re familiar with before you go. When in the VFR corridor you’ll need to make required position reports on a CTAF frequency. Make sure that you have the proper charts and have studied pictures of the landmarks so that you know what you’re looking for. I tend to plan on this as a backup in the event that the controllers won’t give me advisories.

    Pros:

    • Doesn’t require talking to controllers/ class B clearance
    • More freedom to select altitude and routing as desired

    Cons: 

    • Less traffic awareness
    • Required position reporting

    All the requirements and guidelines for flying the corridor can be found on the back of the NYC TAC chart. Any pilot flying the river is required to have one of these or a NYC helicopter route chart on board. If you’re using Foreflight, look in the Documents section under FAA Fly Charts and select the NYC TAC chart in order to read the back of page.

    Below you’ll find examples of the diagrams/ instructions printed on the back of the NYC TAC charts.

    You can see the traffic flow requires northbound airplanes to hug the east side of the river, while the southbound traffic stays on the west side. The VFR reporting positions (listed from North to South) are: Alpine Tower, George Washington Bridge, Intrepid aircraft carrier, Goldman Sachs (clock), Statue of Liberty, VZ (Verrazano Bridge). Each position report should include aircraft type, position, direction, and altitude.

    Other things to be aware of:
    NYC is always a hotspot for TFR’s. There are often TFR’s for baseball games or presidential movements so make sure to check before you head that way. Additionally, there is a speed restriction in place of 140 kts, though I’m not sure why anyone sightseeing would want to go that fast anyhow.

    I realize that all of the procedures and restrictions can be overwhelming, but with the proper preparation, the Hudson Skyline is one of the most incredible places in the world to operate an airplane. There are a lot of things that are easy to get excited about that don’t live up to expectation, but this isn’t one of them. I’ve never taken anyone to the river that wasn’t impressed by what they saw and that’s why I plan to keep going back.

    About to cross the VZ looking north toward the city

  • Determining Pattern Altitude

    ByHank Gibson

    Figuring out the pattern altitude at an airport should be pretty simple, right?  But, in this day of helpful technology, most pilots actually get it wrong.  How can you always get it right?  Well, it just takes about an extra 15 seconds.  Here’s how.

    Traffic Pattern
    John Wayne Airport Traffic Patterns

    As outlined in the Aeronautical Information Manual, section 4-3-3, “traffic pattern altitudes for propeller-driven aircraft generally extend from 600 feet to as high as 1,500 feet above the ground.”  Further, in the Pilot’s Handbook of Aeronautical Knowledge on page 13-10, it states:  “1,000 AGL is recommended pattern altitude unless established otherwise.”

    Okay, so for piston driver’s, we’ve got it narrowed down to 1,000 AGL (Above Ground Level for those who don’t like acronyms).  But wait!  There’s that very important phrase at the end of the last quote:  “unless established otherwise.”  That means not all airports have traffic pattern altitudes of 1,000 AGL, or else they wouldn’t put that line in there!

    How do you find out what the TPA (Traffic Pattern Altitude) is for a certain airport if it’s not 1,000 AGL?  Great question!  Your first guess is probably to look on Foreflight.  Though this is a good start, it is not the full answer.

    Let’s use an example.  Look up KAQO, the Llano Airport on Foreflight.  At the top of the page, the airport elevation is stated as 1,101′ MSL and the pattern altitude is stated as 1,902′ MSL.  From what we just learned, 1,902′ MSL is not 1,000 AGL, so is 1,902′ MSL otherwise established?

    On the Airports page with KAQO pulled up, tap the A/FD tab, second to last on the left.  Scroll down to Llano Muni.  Read the whole entry.  Does it state in the entry that pattern altitude is different than 1,000 AGL?  It sure doesn’t.  So, because it is not otherwise established, pattern altitude at KAQO is 2,102′ MSL not 1,902′ MSL.

    Where did Foreflight get that?  I have no idea.  Too often, though, pilots look at the Foreflight pattern altitude and don’t actually check the Airport Facilities Directory (A/FD).  Then, they get the pattern altitude wrong.

    What does it look like when pattern altitude is otherwise established?  Look up KSGR, Sugar Land Regional, on your Foreflight app.  Foreflight states the elevation as 82′ MSL and the Pattern Altitude as 1,000′ MSL.  Is this correct?  Well, tap that A/FD button again and let’s find out.

    On the second line of the A/FD entry, it says TPA-See Remarks.  Down in the remarks section, we find the following:

    TPA-1000 (918) single engine piston acft, TPA-1500 (1418) for twin and turbojet acft, TPA-500 (418) for helicopters within 2NM.

    Foreflight got it right this time for single engine pistons, but if you are in a twin, the pattern altitude is different.  What’s the lesson here?  Always check the A/FD and don’t always go by what Foreflight says.  The A/FD is always right and usually has a little more detail to help set you straight.

    One last thing.  Both the AIM and the Pilot’s Handbook of Aeronautical Knowledge, when talking about pattern altitude, state, “When operating at an airport, traffic pattern altitudes should be maintained unless otherwise required by the applicable distance from cloud criteria in…section 91.155.”  91.155 defines basic VFR weather minimums.  So, to fully interpret what the AIM is saying, we have to take into account the type of airspace we are in to determine if we can safely and legally operate at pattern altitude at a particular airport.

    For example, let’s say we are at KCVB, the Castroville Airport.  Pattern altitude there is 1,602 feet, which is 829 AGL.  CVB is Class G airspace up to 700 AGL, then Class E above that.  Let’s say there is a 700 AGL broken cloud layer.  Pattern altitude is 829 AGL, so you won’t be able to get up that high with a broken ceiling.  What altitude can you do pattern work at to stay legal?

    Class G VFR weather minimums during the day below 1,200 AGL is 1 SM visibility and clear of clouds.  So, legally, you could fly at 699 AGL (which at CVB would be 1,472 MSL) while in the pattern and be legal.  Safe?  Maybe, but probably not if you are skimming the base of the clouds.  Is 1300 MSL a safer pattern altitude in this example?  Well, that is 527 AGL, so probably not, since towers tend to stick up that high sometimes.

    Let’s go back to KSGR and put a 1,000 AGL overcast ceiling there.  SGR is Class D airspace and we already determined pattern altitude there was 1,000 MSL for piston singles.  VFR visibility and cloud clearance requirements in Class D airspace are 1,000 feet above clouds, 500 feet below clouds, and 2,000 feet horizontally from the clouds with 3 SM visibility.  In order to stay 500 feet below the clouds, you would be flying a 582 MSL pattern.  Safe?  Probably not, though it is legal.

    To summarize, don’t take Foreflight’s word for pattern altitude.  Cross reference the A/FD (it only takes 15 seconds at the most) to verify.  If it’s cloudy, it’s really best to stay on the ground, but if you want to find out your legal pattern altitude with a cloud deck, cross reference 91.155.  I don’t recommend flying below pattern altitude because it is there for a reason.

  • Avidyne Vantage

    ByHank Gibson

    For years, Cirrus owners who have the Avidyne Entegra PFD and MFD have been clamoring for Avidyne to come up with some sort of upgrade. The Entegra, or EX 5000 system, is late ’90s technology and, though it still works, there will be a certain point in the future when it gives up the ghost. Avidyne still supports the Entegra system, but it’s hard for a Cirrus owner to see all this new technology coming on the market while not being able to upgrade the original Avidyne screens.

    Avidyne gave it a go in the late 2000s with a panel upgrade known as the R9. The R9 was a good system, but Avidyne was very slow on the release (rumors were the company wanted it to be absolutely perfect before releasing it, which frustrated Cirrus, who then switched to the Garmin Perspective panel, leaving Avidyne behind) which led to the R9 only being available as a very expensive retrofit to the Entegra system ($80,000-$90,000 for the system and install). Needless to say, there weren’t that many takers.

    Late in 2020, Garmin announced it had received certification to retrofit Avidyne Entegra equipped Cirrus Aircraft with the company’s G500 TXi displays, which gave new hope to G1, G2, and G3 Cirrus owners. The price tag wasn’t outrageous, coming in at $16,000 apiece for each display. The G500 TXi works with any possible GPS that can be installed in a Cirrus (GNS 430Ws, GTN 650s, GTN750, or the Avidyne IFD 540/440) and with the DFC 90 Autopilot (if the Cirrus is still equipped with an STEC 55x, the Autopilot would need to be changed to either a DFC 90 or a Garmin GFC 500).

    Fast forward to June of 2021 and Avidyne re-enters the game with the Avidyne Vantage. After the R9 debacle, Avidyne has opted this time to go for a more simple approach. The Avidyne Vantage system changes out the Entegra PFD and MFD with bigger screens (12″; Garmin’s TXi units are only 10.6″) with high quality pixelation, synthetic vision, engine gauges, checklists, charts, a hybrid touch interface, and all the other information that was offered on the Entegra system, just all more modern and updated. The best news is that the system provides redundant reversionary mode, which was one of the biggest complaints about the Entegra system.

    The price tag comes in lower than Garmin, with each screen being priced at $12,500. The units will work seamlessly with the Avidyne IFD Series GPS units, though, as of this writing, it isn’t clear if the Avidyne Vantage will work with Garmin GTN 430Ws or the GTN 750/650. I would assume that the integration would be there, but I haven’t found any documentation stating that yet. DFC 90 Autopilot integration would be seamless, but not sure the integration with the STEC 55x or Garmin GFC 500.

    Avidyne says the Vantage will be fully certified in early 2022, but the company is taking orders now. Visit the Avidyne Website for more information.

  • The PIC Isn’t Always the Pilot Who Took Off

    ByAnne Pargeter

    You are at cruising altitude and your flight is going just as planned. All of that can change, sometimes without much warning, and you, the non-pilot, are now in charge. Would you know what to do?

    This was a scary thought for me until I attended a seminar developed for the non-flyer at a Cirrus Owners Pilot Association (COPA) fly-in. Cirrus is the only small plane with a parachute as standard, so I thought all I had to do in an emergency was pull the chute. It’s a little more complicated than that!
    I learned the vast majority of pilot incapacitation happens when the plane is at cruising altitude, so there is time to find a solution.

    anne-pargeter-picture

    I was taught ten basic steps to follow to bring the plane safely to the ground.

    • First attempt to revive the pilot. If he is choking, it is possible to do a Heimlich maneuver from the side. This may dislodge whatever is blocking his airway and solve the problem. If he is experiencing hypoxia, turn off the heat, open all vents, and, if you have on board oxygen, use it. Also, if you can, get instructions on how to descend to a lower altitude. If the pilot is unconscious due to a heart attack or other medical emergency, there are still things you can do from the right seat.
    • Engage the autopilot if it isn’t already on and move the pilot off the controls. *
    • Ensure you are connected to the radio. If you hear ATC or other pilots, you are.
    • Send an electronic trouble message. Set the transponder to 7-7-0-0 to identify your plane to ATC. This will cause your plane to be highlighted on ATC radar screens.
    • ATC will most likely contact you asking what is your emergency. If this does not happen, you will need to transmit a Mayday call. All non-pilot passengers should know how to use the radio to get help, if they know nothing else.
    • With help from ATC, decide where you want to go.
    • Use the autopilot to fly in the direction suggested by ATC. I was taught that ultimately the choice of where to deploy the parachute is up to me because I am now the PIC, pilot in command.
    • Ensure that seat belts are secure and the emergency hammer is between your legs (so you have it to break a window to escape if needed).
    • Pull the parachute handle.
    • On the way down, shut down the engine and brace for impact.
    • After landing, move away from the plane, into the wind. Stay nearby and wait for help.

    The seminar covered specific procedures to accomplish these basic steps, what to do if you don’t get a response from ATC, what to say in a Mayday transmission, how to fly a heading, how to check fuel levels, shut down the engine, etc. After the seminar, I felt much more comfortable about what to do if my pilot suddenly lost consciousness.

    I was also told to practice what I had learned to avoid panicking in an emergency situation. There are so many things the person in the right seat can do under normal circumstances to practice. Learn how to set heading bugs, learn where the plane’s Electronic Locator Transmitter (ELT) is located and how to activate it. This will help rescuers locate the airplane. Learn how to assess your fuel levels. Practice making routine radio transmissions. Observe what your pilot does and ask questions if you don’t understand something.

    Knowing what to do in an emergency situation will give you a sense of control over what will happen to you, your pilot, and any passengers on board your plane. If you have never considered taking a lesson or two for the non-pilot, find yourself an instructor, and learn what you need to know for your plane. Hopefully you will never have to use it, but if you do, you will be ready to be the PIC who lands the plane.

    Anne and her husband Stephen are the proud owners of a Cirrus SR20. They plan to put the airplane to better use once Stephen retires. Anne has a background in desktop publishing and writing.

  • Landing Light Replacement

    ByAndrew Robinson

    One evening this summer, my wife and I were flying down the southern shore of Long Island in my father’s E33 Bonanza. We enjoyed the sunset as we flew westbound and our plan was to fly the New York Hudson corridor, where we would arrive just after dark. As we approached New York’s airspace, two voices in my head started having a debate.

    The first voice said: “You should turn on your landing light when you get to New York to make the airplane more visible.”

    The other voice said: “That’s true, but I bet you’ll burn the landing light out”

    Well, as it turned out, both voices were right. My landing light fired right up when I needed it to fly the Hudson, but when it came time to land back home I had no such luck. Unfortunately, this was not the first time that I had been given the chance to practice my blackout landings. This Bonanza model has only one landing/ taxi light which is mounted in the lower cowling behind the propeller. This location is less than ideal because the filament in the bulb is fragile and can be damaged by engine vibration.

    We landed uneventfully and after putting the airplane away, I decided it was time to look into upgrading the lighting to something a little more modern. I was unsure of my options, but seeing as the airplane needed a replacement bulb regardless, it seemed like a good opportunity to make a change.

    After doing a little reading, I learned that HID or LED landing lights would be the best solution to my problem. I was familiar with LED aircraft lights, but had never heard of HID before.

    Here is what I learned:

    HID Landing Lights

    HID, or High Intensity Discharge landing lights, create light by arcing electricity through a sealed gas capsule. They are brighter than LED and traditional incandescent, and the light created more closely resembles the look and feel of sunlight. HID installations require a ballast to carefully regulate the flow of electricity to the gas capsule and also require a “warm up” period after being turned on in order to reach their full brightness.

    Fitting an aircraft with HID landing lights tends to be more expensive and time consuming than installing an LED light and would likely require involvement by an A&P/ IA. However, if you want the brightest light available, HID is probably the best bet.

    Pros

    • Brighter, more natural looking light
    • Draws less power than standard bulbs
    • Long bulb life
    • Does not generate much heat

    Cons

    • More expensive than other lighting options
    • Lights must “warm up” after being turned on
    • Cannot be pulsed easily
    • Cost/complexity of installations

    LED Landing Lights

    LED, or Light Emitting Diode landing lights, have no filament and work by moving electricity through diodes which are connected into a circuit. These lights have become very popular for many uses due to their simplicity, low cost, and brightness.

    While not as bright as HID light, the LED lights require no “warm up period” and can be easily pulsed. LED lights draw much less power from the aircraft’s electrical system than traditional bulbs and boast incredible life length. LED bulb installation is very simple and can often serve as a direct replacement for the original lights.

    Pros

    • Instant light (no warm up)
    • Incredible life length (>5,000 hours)
    • Low Cost
    • Simplicity of installation
    • Can be pulsed easily
    • Low power draw

    Cons

    • Not as bright as HID lighting

     

    After weighing the options, I decided to replace the incandescent bulb in the Bonanza with an LED bulb. I read the reviews online and talked to some of my friends who work in aviation and eventually decided on the Lycoming Alphabeam. The Alphabeam is FAA/PMA approved and is available through Aircraft Spruce and other aviation parts vendors. The bulb cost around 250-300 dollars and I was able to install it as a direct replacement for our old light. All I had to do was take the old one out, put the new one in, and make a logbook entry.

    Below are some pictures of the installation:

    Last weekend I finally had an opportunity to take the airplane out after dark and see how the new light compared to the old one. I am pleased to say that it did a wonderful job and exceeded my expectations.

    If you are interested in seeing a side by side comparison of the different lighting options, a quick Google search should provide what you are looking for. In my own experience, I would say that the LED light was brighter than the old light and did a very good job illuminating the taxiway and runway. It was extremely nice not to be concerned that my light wouldn’t work as I was setting up for landing at an unfamiliar field after dark. I also enjoyed feeling that I had the option to leave it on during climb and cruise in order to increase my visibility to other aircraft.

    Many models of aircraft have multiple landing/ taxi lights installed which greatly reduces the likelihood of having to land without one. In our case, spending the extra money to upgrade to the LED bulb made sense because of the desire for increased reliability. If you are looking for a relatively inexpensive way to upgrade your airplane, LED or HID lighting may be something to consider.

    Andrew Robinson is a 135 Charter Pilot and flight instructor who lives with his wife and 2 daughters in Pennsylvania.  He flies Pilatus PC-12s and instructs in Beechcraft Bonanzas.

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