Reading Weather Prog Charts

Texas STOL Roundup

ByHank Gibson August 9, 2017August 9, 2017

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.

Present Position Hold

ByHank Gibson February 1, 2015

When I was working on my instrument rating back in 2007, my instructor and I did a lot of unpublished holds.  In ground school, I heard a lot about holding for weather or holding due to a traffic delay.  At my first job, my chief flight instructor was also a Continental (now United) captain and he told me a lot about having to hold for weather going into different places.

I heard all this, but I figured it would never happen to me when I’m flying GA airplanes.

Boy was I wrong!

I was flying a Piper Malibu into Phoenix with two passengers for Super Bowl weekend and the weather was awful.  No thunderstorms, but moderate precipitation and low ceilings.  We were coming into Deer Valley (KDVT) on the north side of Phoenix and about an hour out, ATC advised me that arrivals into DVT were having to hold and to expect a delay.  The controller said the delay would be about 30 minutes, so by doing a quick calculation, I determined the delay would probably be all cleared up by the time I got in the area.  At the time, I didn’t know if the delay was due to weather or traffic congestion.

Twenty minutes later, the controller advised me that there was still a delay.  I queried what it was for and he informed me it was due to weather.  He asked me if I wanted to hold or divert.  I listened to the ATIS and heard the ceilings were variable from just below the minimums to just above.  I told him I would hold as the TAF I saw predicted the ceilings to go up.

“Malibu, hold present position, hold east, expect further clearance 2140 Zulu.”  Gulp.

At this point, my autopilot had gone out, it was turbulent and I was definitely in the soup.  This was going to be fun.

After recovering my wits, I read back the clearance, then set about setting up this hold without getting too far from my present position.  The Malibu I was flying had a Garmin 530 which I was using as my primary means of navigation.  I was on V190, but I didn’t have all the fixes in my flight plan.  What to do?  And what to do fast?

The 530 has a rarely used function called a User Waypoint.  It comes in handy in situations like these.  On the moving map, you can turn the cursor on, move the cursor to any point on the map, and, by pressing enter, create a User Waypoint.  This is what I did on V190.  After I created it, I had to go to my flight plan, find the right spot, and input the User Waypoint just like I would any fix.  Just a note here, when you create a User Waypoint, make sure you remember what you named it so you can find it again.

After I input the User Waypoint in the flight plan, I had to go back and activate the leg that the User Waypoint was the end point on.  Then, to make sure the flight plan didn’t go to the next waypoint once I crossed my User Waypoint, I had to press the OBS button on the 530 in order to put the GPS in suspend mode.

Keep in mind, my autopilot wasn’t working, so this involved a lot of multi-tasking!

That’s how to do a present position hold using the Garmin 530.  Got all that?  Here’s a concise review:

• Create a User Waypoint
  • Turn the cursor on by pressing the FMS knob
  • Move the cursor to the point where you want your User Waypoint
  • Press enter and name the User Waypoint
• Press the Flight Plan button
• Input the User Waypoint into your flight plan at the proper point
• Activate the leg that the User Waypoint is the end point on
• Finally, press the OBS button to put the GPS in suspend mode
• After you’re cleared onward, just press the OBS button again to take the GPS out of suspend mode

The Anatomy of a Hot Start

ByHank Gibson January 14, 2021May 24, 2023

Are you one of those pilots who hates fuel stops simply for the fact that the engine doesn’t have time to cool off?  You pump gas into the plane, hit the bathroom, get in the plane and the oil temperature is still up at 160-170 degrees, leading you to have to figure out how to get the plane going again with a hot engine.  For those without proper training, this usually means a lot of jockeying around with the throttle, mixture, and fuel pump to try and get the thing started without flooding it.  After coughing and wheezing several times, the engine finally comes to life, leaving you to only guess what worked and without the knowledge of how to duplicate it.

Let’s take a step back for a minute to see what is actually happening with a hot engine.  Once the engine is shut off, the fuel in the lines leading from the tank to the engine is vaporized, meaning there is more air in the fuel lines than liquid fuel.  In the engine block itself, there is still liquid fuel in the injectors, but only enough for the engine to cough then quit if started.

When a normal priming and starting procedure is performed, too much fuel is forced into the cylinders and the engine becomes flooded.  A flooded engine just means that the stoichiometric ratio is way too rich, meaning there is too much fuel and not enough air.  The prime does the trick of getting the fuel vapor out of the fuel lines, but it shoves too much fuel into the cylinders.  Once the engine is flooded, it’s a waiting game to allow air into the engine to get the mixture right.  All Lycoming powered high performance and turbo charged engines are notoriously easy to flood when hot.

So, what’s the solution?  By taking a step back to see what is actually happening, you can attack the problem from the source, which is the fuel lines.  You need to get the vapor out of the fuel lines and get some liquid fuel in there.  The procedure for this varies based on the make and model of engine, but I’m going to use the example of the Continental IO-550-N that is in a Cirrus SR22.  I found this procedure in the Continental Engine Manual and it works every time.

(Pilots of other airplanes, keep reading.  I have sections below for PA46s, Columbias, and Bonanzas as well )

• Mixture:  Full Lean (this allows fuel in the fuel lines, but prevents it from going past the mixture control into the engine, sending all fuel back to the fuel tank; a small amount of fuel leaks past the mixture control providing prime for the engine)
• Throttle:  Idle
• Low Boost Pump:  Run for 30-60 seconds (see note below)  (15 seconds in the Turbo Cirrus)
• Mixture:  Full Rich
• Throttle:  Open about 1/4 travel (not 1/4″, that won’t be enough)
• Boost Pump:  Off, but have your finger on Low Boost
• Starter:  Crank (engine will turn over a few more times before firing, this is normal)
• At the first indication of start, turn the Low Boost on, increase the throttle to ensure the engine catches,  then adjust the throttle for 1,000 RPM
  • The engine will fire right about the time you start thinking it isn’t going to work

A few notes regarding engine temperatures:

• If the oil temperature is above 150 degrees, a hot start will be required.  If oil temp is close to 200 degrees, run low boost for 60 seconds in a non-turbo.  If oil temp is 175, run low boost for 45 seconds in a non-turbo.  If oil temp is 150, run low boost for 30 seconds in a non-turbo.  Use 15 seconds for all temps above 150 in a Cirrus Turbo.
• If the oil temperature is between 125-150, skip the hot start procedure, don’t prime the engine, leave the boost pump off, and crank the engine, then boost pump on when it starts and slightly increase throttle to make sure the engine catches
• If the oil temperature is between 100-125, skip the hot start, don’t prime the engine, and perform a normal start with the boost pump on
• If the oil temperature is below 100, perform a normal prime and start

Piper Malibu (PA46-310P with Continental Engine)

• Mixture:  Full Lean (this allows fuel in the fuel lines, but prevents it from going past the mixture control into the engine, sending all fuel back to the fuel tank; a small amount of fuel leaks past the mixture control providing prime for the engine)
• Throttle:  Idle
• Low Boost Pump:  Run for 15-30 seconds depending on oil temperature…
  • Greater than 150 degrees: 30 seconds
  • Less than 125-150 degrees:  15 seconds
  • Less than 100-125 degrees, no need to run the Low Boost
  • Perform normal cold start below 100 degrees
• Mixture:  Full Rich
• Throttle:  Open about 1/4 travel (not 1/4″, that won’t be enough)
• Boost Pump:  Off, but have your finger on the Primer Button
• Magnetos:  On
• Starter:  Crank (engine will turn over a few more times before firing, this is normal)
• Engine should fire with the Low Boost Pump off, but…
  • If the engine starts to die, simultaneously increase the throttle a little bit and hit the primer button.
  • Only tap the primer button, don’t hold it as you’ll flood the engine if you hold it At the first indication of start, turn the Low Boost on, increase the throttle to ensure the engine catches,  then adjust the throttle for 1,000 RPM

Piper Mirage & Matrix (PA46-350P and PA46-350T with Lycoming Engine)

• Leave throttle and mixture idle
  • Before you turn the battery on, ensure the mixture is idle cutoff
  • If the mixture is forward and the battery is on, the low boost pump in the fuel tank will start pumping fuel to the engine and quickly flood it
• Ensure Magneto switches are on
• Open throttle 1/4 travel (not 1/4″ as this won’t be enough)
• Crank
• As soon as the engine begins coughing and wheezing (and this is what it will sound like), push the mixture 3/4 of the way forward
• Once the engine has a good solid fire, smoothly and swiftly push the mixture all the way forward
• Reduce throttle
• Note:  The Emergency Boost Pump can be used as part of the hot start technique, but I usually leave it off.
  • Pro to the Emergency Boost Pump is it can help suck more fuel in and purge vapor during the start
  • Con is that if the engine doesn’t start on the first try, you are flooding your motor

Columbia 400

• Throttle and Mixture Idle Cutoff
• Vapor Suppression:  Run for 30-60 seconds.  Reference above temperatures on the non-turbo Cirrus for run times
• Mixture full forward
• Throttle 1″ in
• Prime for 3 seconds, then off
• Crank
• Once engine fires, primer might need to be pushed momentarily to purge excess vapor
  • On Columbia 350s, the throttle should be twisted (or pushed depending on if it’s an Avidyne or Garmin Columbia) in while cranking
  • Be prepared to reduce power once engine fires

Beechcraft 36 Bonanza

• Throttle and Mixture Idle Cutoff
• Low Boost:  Run for 30-60 seconds.  Reference above temperatures on the non-turbo Cirrus for run times
• Mixture full forward
• Throttle open 1″
• High Boost until fuel flow peaks, then off
• Crank
• Once engine fires, Low Boost might need to be engaged momentarily to purge excess vapor

There are other “procedures” for hot starting out there, but most of them involve starting with full throttle, which can lead to the airplane shooting ahead on a ramp or taxi way if the brakes aren’t properly set.  This can lead to high repair costs, so always be cautious.  Figuring out what is happening when the engine is hot will give you a better chance of getting it started right away.

2018 Great American Lancair Rally

ByHank Gibson August 15, 2018August 24, 2018

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.