There are a multitude of weather products out there today to assist pilots in preparing for a flight. Aviationweather.gov is the best source for getting all the information a pilot needs for planning a flight. Aviationweather.gov is the National Weather Service’s source for all aviation related weather products. When I teach about weather and weather briefings, I recommend to my students to utilize Aviationweather.gov in the planning stages, but still call the Flight Service Station to get a full fledged weather briefing before takeoff.
When preflight weather planning, one of the best ways to get a picture of what is happening over a broad area is utilizing the Low Level Significant Weather Prog charts. The Prog chart gives a forecasted 12 and 24 hour picture of what type of weather to expect over the US. The Prog chart gives the expected flight rules, areas of turbulence, and where the freezing level is located. If you’re looking at the 4 panel view, the Surface Prog chart shows fronts, pressure areas, and areas of expected precipitation. That covers just about everything, doesn’t it?
I believe the Prog charts are underutilized in planning. Foreflight and Garmin Pilot have given easy access to radar pictures, satellite pictures, METARs, TAFs, and several other sources of weather information. But, a lot of the easy access data you can get from those apps is current data (with the exception of the TAF) while a lot of the forecast data takes some hunting around. So, products like Prog charts aren’t often utilized.
The other problem arises when pilots know about Prog charts, but don’t know how to read them, then don’t know how to find the legend to decipher the chart, the chart is often set aside and quickly forgotten about just because of a lack of knowledge. Have no fear, though, as now we will use an example 4 panel Prog chart to decipher the lines and colorations.
Just looking at the Low Level Significant Weather Prog Chart above, it can be a little confusing. That’s why they make a legend!
Coupling the legend with the chart above, we can determine some things. First, California, parts of the Pacific Northwest, a small part of southern Arizona, and a good portion of the Midwest and East coast are going to have marginal VFR conditions in the next 12 hours. Wisconsin, Illinois, a good portion of the Northeast, and a small portion of the Pacific Northwest will suffer IFR from IFR conditions. There are going to be a good amount of low level turbulence in the northern and eastern parts of the country. Finally, the freezing level starts at the surface running in a jagged line across the midwest states and curling up into the Northeast.
That’s a good bit of information, isn’t it? If a pilot is planning a VFR flight into the Northeast tonight, it would probably be best to wait for another day, according to this chart.
Now, to see what is causing the conditions above, we need to look at the Surface Prog Chart.
The green circular areas above show that some form of precipitation is in that area. The circular dots with the triangle located in Mexico and Baja California are depicting moderate rain showers. If the triangle was gone, it would just be moderate rain. In the northeast, all those symbols are showing moderate to heavy snow showers. Across the plains, we see a lot of high pressure, meaning visibility and nice flying weather.
These charts are invaluable when it comes to flight planning, especially over long distances when the weather could be changing a lot over the period of your flight. Put them to use the next time you are planning a trip and you’ll learn you have a much better picture of what the weather is doing.
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 couple of months ago, I had a life-threatening experience while flying. Thankfully, with my flight training, along with a lot of luck, I am here to talk about it.
One of my many piloting jobs is as a glider tow pilot. For those not familiar with gliding, since a glider doesn’t have an engine, every time a glider pilot goes and flies, it’s a team effort. A powered airplane (anything from a Super Cub to a turbine powered Air Tractor) is attached to the glider via a tow rope, which is about 200 feet long. Once the glider pilot gives the go ahead over the airport’s CTAF, then the tow plane begins it’s takeoff roll, pulling the glider along behind it.
The glider becomes airborne prior to the tow plane, then the tow plane will circle the airport environment till it get’s to the pre-determined altitude to release the glider. Some tows are pattern tows and some are higher (not usually above 3,000 AGL), depending on the request from the glider pilot. Once the altitude is reached, the glider pilot pulls a handle in the glider to release the tow rope, then begins his glide. The rope stays attached to the tail of the tow plane, which in turn descends back down to the runway and lands. The tow plane also has a tow rope release handle in case of emergency.
On this particular tow, the plan was to tow the glider up to 3,000 AGL. Upon reaching 2,500 AGL, the glider pilot called me on the radio and stated that his rear canopy had opened up. I looked over my shoulder and sure enough, the rear canopy was fully opened while he was still in level flight behind me. I asked him if he wanted me to tow him closer to the field, but he didn’t reply.
Now, as an experienced tow pilot, I know a glider canopy popping open should not be an emergency situation. It’s definitely abnormal, but would be similar to a door or window popping open in a powered airplane. Not a big deal. If too much force from the relative wind is applied to the canopy, it would snap off; however, a glider can easily land without a rear canopy.
About 5 seconds after I radioed the pilot (and received no reply), I felt my tail instantaneously lift up into a completely vertical position, which caused my nose to go straight down. The next thing I knew, a whole lot of earth suddenly filled my windscreen and I was in what’s known as a graveyard spiral.
A graveyard spiral (as defined from the Airplane Flying Handbook pg 4-23), “is a descending turn during which airspeed and G-load can increase rapidly….the airplane is flying very tight circles, in a nearly vertical attitude and will be accelerating since it isn’t stalled.” It’s also known as a spiral dive.
Back to the story. At this point, I tried to reach for the glider release handle. Unfortunately, due to the shoulder straps holding me against the seat, plus the g’s, and also the quart of oil and tow bar that flew forward and hit me in the back of the head, I couldn’t reach it. I was semi-upside down at a certain point, which dislodged the oil and tow bar from the floor of the baggage compartment. They sailed over the seat and nearly gave me a concussion.
At this point, 2,500 feet above the ground, I had a choice to either fight for my life at a very low altitude or to sit back and become part of a big explosion.
I decided to fight for my life.
As I was spiraling to the ground, I felt the tow rope snap. Up to this point, I had still been attached to the glider. The rope snapping was a good thing, as my airplane was now under my control, not attached to, and being affected by, a glider (more on that later). I now had a lifeline, no pun intended.
After I felt the rope snap, my instincts and training kicked in. I initiated the spin recovery procedure using the PARE acronym. This task was difficult to do as I had a lot of debris flying from the rear of the plane to the front, blocking my view out of the windshield. There was also debris around my feet, hampering my ability to use the rudder pedals. The spiral finally stopped and I recovered approximately 500 feet above the tree tops. It took my heart a lot longer to stop spinning.
After barely regaining my emotions, I tried to evaluate the condition of the plane. Were all the pieces of the plane still there, was the engine damaged, did my control surfaces still work?
Once I advanced the throttle and saw an increase in my engine RPM, I started an immediate climb to give me altitude to get back to the airport. I had engine power but I wasn’t sure how long it would last if I had damage. Now, what they don’t teach you during spin training is that when this happens unexpectedly, you will become very disorientated. You have just been spiraling unexpectedly and your equilibrium will be out of whack. As I leveled out just over the tree tops, I was too low to visually see any landmarks, nor could I see the airport. Once I was able to climb, I was able to orient myself and figure out where the airport was.
I had to be very careful getting back to the airport and landing without radio communication, since my radio was knocked out with all of the FOD from the baggage area. Thankfully, the landing was uneventful. After I landed, I saw the glider limp in over the trees. The rear canopy was totally gone, while the front canopy and other parts of the glider had suffered major damage. Miraculously, my airplane wasn’t damaged, except for the wire from the radio which came loose during the spiral.
So, how did all this happen, you ask? Well, the glider pilot made 2 huge mistakes. First, in gliding, the moment the glider pilot loses visual sight of the tow plane, you are supposed to release the tow rope. He did not do that and almost killed both of us.
Second, as pilots we are taught to always fly the airplane first. Everything else, no matter what it is, always comes after flying the airplane. As I stated previously, the loose canopy is not an emergency situation, but since the glider pilot did not aviate first and was distracted, it was almost a fatal day for 2 people and 2 airframes.
So, what caused this chain of events? By getting distracted by the open canopy, the glider pilot inadvertently pulled back on the stick while trying to close the canopy. Then, by not releasing the glider from the tow plane, the glider pilot climbed rapidly with an excessive rate of climb while still being attached to me. The rapid climb is what pulled my tail up, causing my nose to drop and put me into the spiral. The tow rope snapping set into motion my recovery, since up till that point, I literally had no control. An extremely high lift wing was attached to my tail, pulling it up, and there was absolutely nothing I could do about it.
We all spend time practicing and demonstrating emergency maneuvers during our flight training and during flight reviews. Many times you might think, I’ll never need to use this stuff. Thankfully, some of the procedures I learned in the past kicked in at a time of need, even though my heart was beating out of my chest.
At some point in every pilot’s career, some type of spin training or Upset Recovery Training would be highly recommended. Then, when things go wrong, remember to always aviate first, then handle all the other things that need to be handled.
Interested in spin training or Upset Recovery Training (UPRT)? Check out the list of Malibu & M-Class Owner’s and Pilot’s Association (MMOPA) approved UPRT vendors and schedule UPRT training today.
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.
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.
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.
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.
On March 30th, Texas Governor Greg Abbott issued an Executive Order mandating that all travelers (including Texas air travelers operating or traveling in private aircraft) from the following designated areas were to self-quarantine for 14 days (or the extent of their stay in Texas, whichever was shorter) upon entering the State:
California
Louisiana
Washington State
Atlanta, Georgia
Chicago, Illinois
Detroit, Michigan
Miami, Florida
If you traveled to Texas by air from any of the above designated areas, you are required to fill out the Arrivals from Areas Designated for Mandatory Self-Quarantine Form. Failure to do so could lead to a $1,000 fine or 180 days in jail, or both. For private aircraft owners/operators, put your Tail Number in for Flight Number and “Private” for Airline.
Aircraft owners, stay away from the designated areas listed above and you won’t have any worries. A lot of you reading this are from Texas, so make Louisiana a fly over state for now and don’t make any landings in Cajun country.
When a pilot first glances at the title of this article, the first thought that probably goes through that pilot’s head is, well that’s easy.
And it is, if you are flying a high wing Cessna. On other airplanes, there are a few tricks to checking the stall warning horn. If you get them wrong, you’re liable to get a bill from your maintenance shop for an hour of labor for a problem they couldn’t duplicate.
Cirrus SR22
Let’s start with the Cirrus. On the pre-FIKI Cirrus aircraft, there was a small little hole in the wing that contained a diaphragm. That diaphragm sensed a change in airflow at a certain angle of attack just below the critical angle of attack and set off the stall warning horn. Unfortunately, the only way to check that is to suck on the hole during pre-flight.
I don’t. I verify the hole is clear and that’s about it.
On the FIKI Cirrus aircraft, there is actually a stall warning vane. It looks like a high wing Cessna vane, but if you turn the batteries on and try and get it to come on during your light and pitot heat check, nada.
Here’s the trick, and the checklist doesn’t do a good job of describing this.
Turn on the Avionics Master
Turn on the speaker
Put the flaps to full
Then move the stall warning vane and you’ll hear the horn
The speaker and the Avionics Master are so you can actually hear the horn (if you had the headset on while you were doing this, the speaker would be unnecessary). The flaps have to be full because the pitch attitude for the critical angle of attack is lower with the flaps down, so the horn goes off when at a different angle. You then don’t have to use as much force to push the vane.
Piper PA46
The early -310P Malibus are pretty simple and straight forward. Move the vane, get the horn.
In the -350P, you can’t get the horn to come on by moving the vane. So, Piper put a stall test button that’s hidden underneath the upper left side of the instrument panel. Push that to test the horn. On the G1000 PA46, it is located directly above the PFD. On the Avidyne, it’s below and to the left of the pilot’s yoke.
Testing the stall warning horn is a very important part of pre-flight. A pilot needs to know if the aircraft is close to a stall. The advent of Angle of Attack indicators in small, GA aircraft, have added a greater awareness to the angle of attack during all phases of flight to avoid those stall spins.
If the stall warning horn goes off or the AOA shows yellow, lower that nose immediately.
When I was doing my instrument and multi-engine training, we did a lot of circle to land approaches. As a student, I could never figure out why these types of approaches would ever be practical when you could an approach straight in to another runway. But, as a good student, I never asked my instructors the purpose of them, I just did them to the best of my ability.
Now, having been flying in the IFR system for almost a decade, I’m finally beginning to fully understand the practical purpose of a circle to land approach. I have actually elected to do an approach where I had to circle to land on several occasions in actual IMC conditions.
One important note to remember on circle to land approaches is that the minimum descent altitude (MDA) is always higher than on a straight in approach. The reason for this is that you are basically joining the pattern for a different runway and you have to be able to visually keep yourself clear of towers and other obstacles. So, you need a higher visibility and a higher ceiling than if you were just lining up to come straight in.
Here are a couple of practical circumstances where it would make sense to do a circle to land approach.
Airports with only 1 straight in approach
This one is easy. There are a number of airports scattered around the US that have only 1 straight in instrument approach published for it. Around my part of Texas, the first one that pops into my mind is the RNAV 31 at T85 in Yoakum, TX. Most of the year, the prevailing wind is out of the south, so 13 is the favored runway at T85. During the winter is when most of the IMC weather happens in South Texas, so that is why the approach is for 31.
Of course, especially this year during the summer, there are some IMC days where an approach to T85 would be necessary. When there is a strong wind out of the south, landing on 31 is impractical, so a pilot would fly the approach to 31, then circle to land on 13.
Approaching from the opposite direction
Take a look at the RNAV 19 at KBMQ, Burnet, TX. The two initial approach fixes (IAF) are IXANY and JIBAJ. If a flight is approaching BMQ from the west or north, this is an easy approach to join. If a flight is coming from Austin (directly the the east and a little south) or San Antonio (almost directly south), it would be a bit of extra flying to get configured properly for the approach. Especially coming from Austin, because the degree of turn to join at JIBAJ wouldn’t make the approach practical.
Well, how about vectors? Unfortunately, Houston Center doesn’t have this approach depicted so vectors aren’t a possibility. Center can give you vectors north to make the angle a little easier to join at JIBAJ, but they can’t vector you onto the approach.
Direct DLORA to join is another option, but again, if you are approaching from the southeast, the angle is wrong.
Insert the RNAV 01 approach with a circle to land. AMUSE is right on V163, so it’s really easy to join the approach there coming from the south. Coming from Austin, joining the approach at SUBIE works out great. Fly down to the MDA, join the left downwind for 19, and everyone is happy.
VOR Circle to Land Approaches
Every instrument pilot has had an instructor “force” them to do a VOR A or VOR B approach and no one enjoys them. I personally think they are good practice. With the number of RNAV systems and RNAV approaches out there, though, VOR approaches are becoming a bit archaic.
They do have a place in this discussion, though. A VOR approach is given an A or B designation when the angle of the final approach course is greater than 30 degrees to the runway (VOR A KLZZ), or the final approach course is lined up with the runway, but the MDA is too high to practically descend and land (VOR A KGRK or the VOR/DME C KASE).
So, there are practical uses for a Circle to Land approach. The next time you do some IMC work with an instructor, ask him/her if you can include one.
I think you left out an important part of the picture. Maybe it’s there, but I can’t find it. The question is WHEN?
The footnote tells when it was issued, but not WHEN it applies. Is it a statement of present conditions? Or is it a forecast of conditions at some future time? Somewhere that information is available, but I can’t find it.
Albert Holt AL@holtmarinesystems.com
Hi Albert, at the bottom of the Prog Chart itself, there is an issue time, then directly below it, there is a valid time. That valid time is when it applies. Surface Analysis charts are current, but Prog charts are always forecast. Unless of course, they haven’t been updated, then it’s showing what was supposed to take place in the past.
Thanks for the WX update on readingprog charts.
I think you left out an important part of the picture. Maybe it’s there, but I can’t find it. The question is WHEN?
The footnote tells when it was issued, but not WHEN it applies. Is it a statement of present conditions? Or is it a forecast of conditions at some future time? Somewhere that information is available, but I can’t find it.
Albert Holt
AL@holtmarinesystems.com
Hi Albert, at the bottom of the Prog Chart itself, there is an issue time, then directly below it, there is a valid time. That valid time is when it applies. Surface Analysis charts are current, but Prog charts are always forecast. Unless of course, they haven’t been updated, then it’s showing what was supposed to take place in the past.