Rudder Use

ByHank Gibson September 15, 2021October 19, 2021

I have the blessing (same say it’s a curse) of being a tailwheel pilot. I did my tailwheel training in a Citabria and have gathered about 400 hours over the years in Citabrias, Super Cubs, and Maules (don’t judge all tailwheel airplanes by a Maule, by the way. The Maule is it’s own unique animal). The blessing of being a tailwheel pilot is that it greatly enhances my stick and rudder skills for all airplanes.

No matter what airplane you fly, basic stick and rudder skills are always important. At some point during a flight, the rudder will need to be used, even if you have an airplane that has a yaw damper. Rudder use is vitally important in the takeoff and landing phase, especially if you fly an airplane that generates a lot of torque on the takeoff roll. Rudder in that phase of flight is pretty evident, because if the rudder isn’t used, you’ll go off the left side of the runway.

Where I want to focus is rudder use in the landing phase. As an airplane comes down final, there are several forces that are be acting on the airplane. When it’s bumpy, updrafts and downdrafts are moving the plane up and down and all around. To correct for a bump that sends the airplane into a roll, aileron is added in the opposite direction of the roll. That aileron input also induces adverse yaw, pulling the nose of the airplane in the opposite direction that the pilot is moving the ailerons.

If a pilot isn’t using his feet correctly, then the nose of the airplane will wallow around through the air as aileron inputs are used. The tail is also moving around quite a bit, so the pilot might not “feel” the yawing moment, but the passengers in the back seat certainly will.

The other advantage that comes with proper rudder usage on short final is the airplane is more responsive to control inputs. When utilizing both the ailerons and the rudder, a pilot is able to fly the airplane much more precisely and control it much better.

This doesn’t mean you have to be staring at the turn coordinator the whole time down final. In fact, that’s exactly what you don’t want to do. Your eyes need to be outside the airplane. Just get in the habit of stepping on the rudder whenever you move the ailerons on final and eventually, you will feel what your airplane is doing. Don’t step on the rudder as hard as you can, but slight pedal pressure in the direction of aileron input will make a big difference.

Rudder is also vitally important for landing in a crosswind no matter that airplane. Crosswind landings are a learned skill that take a lot of practice to perfect. There is also a lot of confusion as to what control input does what during the landing.

Here is the simplest way to picture a crosswind landing and what the controls do:

Aileron-When performing a crosswind landing, the ailerons keep the airplane over the centerline. If the airplane is drifting to the right of the centerline, add left aileron to bring it back to centerline, then keep enough aileron control pressure in to keep the airplane over centerline. In a perfect crosswind landing, the main tire on the windward side will touch down first. Left crosswind means left tire touching first.
Rudder-When performing a crosswind landing, the job of the rudder is to straighten the nose to point down the runway. You will not be coordinated in a crosswind landing, you will be slipping, which is the goal. So, with a left crosswind, you will be inputting left aileron to remain over the centerline and you will also need right rudder to straighten the nose. This also prevents the airplane from actually rolling in the direction of the aileron input.

If you remember for a crosswind landing: “Aileron into the wind to stay over centerline, opposite rudder to straighten the nose.” Too much aileron and the plane will drift into the wind. Too much rudder and the nose will yaw in the opposite direction.

Rudder is very important, even in our day and age where a lot of general aviation airplanes have yaw dampers. Our feet only have a job for a short period of time, but that is the most critical time. An excellent way to get more proficient in rudder use is to go get a tailwheel endorsement. If you are in the central Texas area, check out TacAreo in Fredericksburg, T82.

Don’t let your feet fall asleep!

The Do’s and Don’ts of Drones
ByAndrew Robinson June 7, 2016June 14, 2016

This is the second part in a series on drones and Unmammed Aerial Systems (UAS). To read Part 1, Drones: A Brief History, please click here.

I’m surprised how often I’ve been asked about drones by concerned passengers as they load up for a charter flight. Most commonly I’m asked how many drones I’ve seen while I’m flying, or how many drones I’ve hit/ almost hit. Sadly, the media has made this drone crisis into something that it isn’t. I’ve never seen a drone while I was operating a full scale aircraft, and I’ve certainly never been put into a situation where I felt that a drone was a threat to my safety or the safety of the flight. In fact, I only personally know one pilot who has reportedly seen one around an airport and that was an isolated incident (and a non-event).

The reality is that while Unmanned Aerial Vehicles can be a real danger to full scale aircraft, incidents aren’t actually all that common and detailed information is often lacking or missing altogether. It is likely that some of the reported drone incidents were actually a case of a pilot confusing a loose balloon or a bird for a drone. This, combined with the media’s sensationalizing of every “close” encounter nationwide has led the public to believe that the problem is much bigger than it actually is.

In actuality, when the AMA (Academy of Model Aeronautics, the USA’s governing body for model aircraft) analyzed the data from the FAA’s 764 recorded Drone sightings, only 27 of them (3.5%) were actually recorded as “near misses” or “near collisions.” Additionally, only 10 of the records (1.3%) indicate that pilot was required to take evasive action.

The records also include reports of drone sightings at altitudes which would be impossible for civilian models to attain (19,000-24,000′). Finally, some of the sightings took place in areas which are specifically set aside for model aircraft and drones to operate. In those cases, the person flying the drone when it was reported was actually doing so in a safe and legal manner in an area designated for that specific purpose. If you’re interested, the whole article is available here and has a lot of great information.

As pilots, it is important that we do our part in helping reduce the risk of drone strikes. The biggest thing that we can do to help is to report any activity that we see so that it can be investigated and hopefully the drone operator can be found and dealt with. Try to get as much detail as possible about the incident, such as the size, color, location, direction and altitude of any sighted UAVs and report it to the closest tower or controlling agency.

Recently, the people in Washington have come up with a bunch of new rules to regulate the operation of model aircraft. As of this year, every unmanned aerial vehicle between 0.5 and 55 lbs must be registered with the FAA and have an FAA issued registration number located on the model itself. The logic here is that if someone crashes a drone where it shouldn’t have been operated, the officials will be able to identify the owner of the model and take action.

Model manufacturers and vendors have also agreed to start providing information about a program called “Know Before You Fly” (KBYF) in the packaging of the drones. This program seeks to help educate new hobbyists to the rules and responsibilities associated with model aviation. For more information on KBYF, here is a link to their website.

In the end, the sad reality is that it’s a combination of many factors: new technology making models cheaper and easier to fly, GPS navigation and automation, the media blowing the incidents out of proportion, and inexperienced and foolish operators which have caused the growing concern and required the FAA’s action. I think that it is important to understand that thousands of people have been flying radio controlled models for many years responsibly and this has never been a problem. The AMA has rules (which are the same ones now adopted by the FAA) regarding flying location, altitudes, speeds, and more which have kept both the modelers on the ground and the pilots in the air safe until now. Its a classic case of a few foolish individuals who have caused all modelers to be cast in a bad light.

There is no reason to fly in fear, though. A pilot should always be watching for hazards as he or she is flying, regardless of the variety. In fact, according to the FAA’s website, there were 142,000 wild life STRIKES with civil aircraft in the USA between 1990 and 2013. That seems like a much bigger concern to me than the 764 reported drone SIGHTINGS. As with any new technology, drones are suffering from growing pains. As the rules fall into place and new operators become better experienced, hopefully we will hear about fewer incidents on the evening news. Anyway, I’ll stop “droning” on. Fly safe.

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.
Cirrus Approach
ByHank Gibson September 18, 2019September 18, 2019

Earlier this year, Cirrus debuted it’s new Learning Management System (LMS), Cirrus Approach. For several years, Cirrus has led the way in online systems training while using several different platforms for it’s LMS. Cirrus Approach is the culmination of lots of sampling and tinkering, and boy, did Cirrus knock it out of the park.

For those of you unfamiliar with the Cirrus training program, here is the quick rundown. When a pilot who has no Cirrus time buys a Cirrus aircraft, initial transition training is required to familiarize the pilot with the aircraft systems, speeds to fly, power settings, etc. The Cirrus Transition Course is a 3 day that gets a VFR pilot up to speed in the airplane. Under the Cirrus Embark program, those 3 days of training are covered by Cirrus and free to the new owner.

If the pilot is an IFR pilot, then the 5 day Cirrus Advanced Transition Training Course is required. If the pilot has Cirrus experience, but with a different engine or avionics configuration, there are courses for that too. The Cirrus Embark program covers 3 days of training for most courses for a new Cirrus owner.

As part of the aforementioned courses, there are systems to learn about and procedures to understand. This is where the Cirrus Approach LMS excels. Cirrus has done a great job of putting together lots of good videos (that are actually interesting but not annoying) on the airplane, systems, how to fly it, etc. for each course. It cuts down greatly on the time that the training instructor has to spend on the ground with the pilot since the pilot has already compiled knowledge through Cirrus Approach.

Cirrus Approach is accessible online at learning.cirrusapproach.com. To get access to the courses, create an account, then select the Learning Catalog. The courses are categorized based on the type of training (Transition, Advanced Transition, Avionics Differences, Airframe & Powerplant Differences, Recurrent, and Specialty), then further broken down into the type of airplane, engine and avionics (eg. SR22T G6 Perspective+). Make sure the correct engine and avionics configuration is selected! Notice, there is a difference between the SR22T and SR22 (Turbo & Non-Turbo).

Anyone can do the specialty courses. I would highly recommend for everyone to take the Engine Management course as well as the Icing Awareness Course for you TKS and FIKI operators. The Takeoff & Landing course is a good refresher course for a pilot who hasn’t done any training in a while.

The Recurrent Training courses are encouraged for all Cirrus pilots. There is an IFR Refresher, a VFR Refresher, and a Skills Refresher. These are recommended to rotate through with a CSIP (Cirrus Standardized Instructor Pilot) on a yearly basis. With a little extra ground, a Flight Review and an IPC can be accomplished yearly using these courses.

Interested in Initial or Recurrent training in your Cirrus using Cirrus Approach? Contact Texas Top Aviation today!
Recurrent Flight Training
ByHank Gibson August 7, 2014August 7, 2014

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

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

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

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

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

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

Try to schedule your recurrent flight training every 4-6 weeks and your piloting skills will stay top notch, keeping you safe and proficient in every circumstance.
Using the ICARUS Device to Simulate IFR Conditions
ByHank Gibson January 7, 2021January 7, 2021

Most of us who have been through instrument training are familiar with the traditional view limiting devices. There is the original hood, which does a decent job of blocking a pilot’s view of outside, but there are still gaps that allow “peeking”, though that peeking doesn’t really help a pilot fly an approach. It does help them figure out which way is up, so it’s not a true simulation.

The other problem with a hood is the process of putting it on to begin simulating IFR conditions, then taking it off when it’s time to land. This process takes time and the instructor has to take the controls (or the autopilot flies), losing some of the realism of the simulation.

Overall, an IFR hood is relatively comfortable. The elastic band sits under your headset, doesn’t squeeze your heard, and doesn’t press underneath your ear cups of the headset, giving you a headache. Hoods are large and somewhat unwieldy.

Foggles are another way to simulate IFR conditions for training. Most of the time, these are safety glasses that have most of the lens blacked out or fogged out, leaving little slits at the bottom for the pilot’s eyes to see the instruments.

Foggles aren’t quite as good as an IFR hood at blocking the outside. Due to their shape, there are often cracks that allow more “peeking” then a hood. The process of beginning to simulate IFR conditions and ending the simulated IFR conditions is easier though, since all the pilot has to do is put the foggles on or slip them off, which can often be done one handed (putting them on can be more difficult one handed since they have to fit underneath your headset). Wearing them for a long period of time can get painful as your headset is probably going to start crushing them against the side of your head.

The best comfort and view limiting combination I have found, so far, is called the ViBAN. It’s very comfortable and does a really good job of simulating IFR by blocking a view of the outside.

What’s the whole goal behind a view limiting device? When a pilot starts instrument training, ideally, all the training would take place in the clouds, since that is why someone get’s an instrument rating. As we all know, this isn’t possible, hence the need to simulate IFR conditions. The problem with simulating IFR is, it’s not true IFR. True IFR conditions are different then what a hood or a set of foggles can simulate. This can lead to spatial disorientation if a fresh instrument pilot enters the clouds for the first time, having done all his training in simulated conditions.

I’ve even heard a story of a pilot who did all his IFR training with a hood, passed his check ride, went into the clouds the first time, and put the hood on because he was getting disoriented since he hadn’t ever experienced true IFR.

What about full motion simulators? How I wish every airport had a full motion simulator for instrument training. Full motion sims are truly the best way to simulate IFR conditions. A pilot can easily get spatially disoriented in a sim if he or she isn’t careful. It’s a great way to simulate IFR conditions, but, alas, this just isn’t possible.

Are we doomed to just do an okay job of training instrument pilots in simulated IFR conditions with a hood or foggles?

Nope, at least not anymore.

Enter the ICARUS Device. The ICARUS Device, which stands for Instrument Conditions Awareness Recognition and Understanding System, is an amazing piece of equipment which truly simulates IFR conditions in the training environment. The ICARUS is a plastic shield that uses a Polymer Dispersed Liquid Crystal film that allows the degradation of a pilot’s visibility. It clips on to a baseball cap and is attached to a battery. That battery is then bluetoothed to an iPad or iPhone App that allows the instructor to put the pilot into and take him out of simulated IFR conditions.

Originally designed for helicopter training, it’s an excellent tool for fixed wing IFR training too. I’ve been using it for the last month and a half and I am hooked. The customer’s that I have used it with truly say that they cannot see a thing outside. Because the plastic shield turns white, it really does give the view that the pilot is in the clouds. The inner ear certainly believes it. The curve of it fits the glare shield in most planes nicely (there is some custom cutting that would have to take place for specifically rounded glare shields, but it fits Cirrus and Piper Saratogas nicely, the two planes I have used it in), and it sits away from the pilot’s face, blocking out all windows, which is what clouds do.

The greatest thing from an instructor’s standpoint is the ICARUS Device app. The pilot puts the device on before taxi and I set the app to VMC. This completely clears the ICARUS Device so the pilot can see just fine for taxi and takeoff. Then, at about 400 AGL, I tap the <1/2 VIS button on the app, and boom, the pilot is in the clouds. I even have a time delay to slowly make the ICARUS Device opaque to simulate slowly entering the clouds. I do the same thing on an approach, except in the reverse order, simulating we are slowly exiting the clouds.

The ICARUS Device is a game changer for IFR training. It’s comfortable, easy to use, the battery lasts for a long time (though bring a standard USB charging cord with you in the plane because the battery failure mode makes the ICARUS Device opaque instead of transparent. You don’t want that to happen at 200 AGL!), and, most important, it truly simulates IFR conditions.

After using it, I believe all flight schools and CFII should get one of these, both in the fixed wing and helicopter world. It’s the best option for simulating IFR conditions.

Checkout the ICARUS Device website for more information and to hear the story of the company.

Texas Top Aviation, LLC was given an ICARUS Device by the ICARUS Device company to test. Texas Top Aviation, LLC was not paid for our above opinion on the ICARUS Device (trust me, if it was terrible, I would have told you!).
Cirrus Alternator Failure
ByHank Gibson April 27, 2018May 1, 2018

A Cirrus is an electric airplane. There are no vacuum pumps and therefore no vacuum driven instruments. The Klapmeier brothers did this on purpose, trying to make it a modern airplane. No vacuum systems means no vacuum pump failures, hence there is a lower likelihood of instrument failures in IMC.

What Cirrus did instead was put a lot of electricity producing and storing devices in the airplane. All SR20 and SR22s are equipped with 2 engine driven alternators and 2 backup batteries. Alternator 1 is a 28 volt alternator (the amperage varies based on whether or not you have an air conditioner) while Alternator 2 is a 28.5 volt alternator. There are 2 24 volt backup batteries, as well. Battery 1 is also used for starting.

In traditional airplanes that have 1 alternator, an alternator failure can affect a lot of things. Depending on how many electronics are in the airplane, the battery can get depleted quite quickly.

The Cirrus electrical system is quite ingenious. It’s a little bit different based on whether you have an Avidyne Cirrus or a Garmin Perspective Cirrus. I will discuss that further below.

The main goal of this article is to talk through what happens in the event of a #1 Cirrus Alternator Failure (an Alternator 2 failure actually isn’t a big deal at all, though Alt 2 is required for IFR flight), the procedure for trying to fix it, and a technique I have developed that makes the pilot’s job easier. First, let’s go through the #1 Cirrus Alternator Failure procedure.

Alternator 1 Failure

In either avionics configuration, the Cirrus Alternator Failure procedure is the same.
- Check and reset the circuit breaker for Alternator 1 (Reset only once)
- Cycle the Alternator 1 master switch
- If Alternator 1 doesn’t come back online, leave the Alternator 1 master switch off and shed load on the battery
Avidyne Entegra

The Avidyne Entegra has 2 busses, the Main Bus and the Essential Bus. Alternator 2 isn’t set to come on until the engine RPM reaches 1700. While on the ground, Alternator 1 runs both the Main and Essential Buses. In the air, Alternator 1 runs the Main Bus and Alternator 2 runs the Essential Bus. Since Alt 2 is 28.5 volts, the higher voltage won’t allow the power from Alt 1 to cross over and run the Essential Bus. There are also 2 one-way directional diodes that prevent the voltage from Alt 2 to cross over and run the Main Bus.

Having said all that, when Alternator 1 fails, Battery 1 is now running the items on the Main Bus. There are a significant number of items on the Main Bus which causes the 24 volt battery to quickly lose it’s charge. This precipitates the need for shedding load. Items like GPS 2, the air conditioner and aircraft lights can all be turned off.

In the above scenario, Alternator 2 is running the Essential Bus still that has all the Essential items on it. Those include:
- The PFD
- Flight Instruments and associated Avidyne computers
- Engine Instruments and associated Avidyne computers
- GPS 1
- Com 1
- Nav 1
- Autopilot
- Stall Warning
- Charging Battery 2
Note 2 important items that are not on the Essential Bus: the flaps and the landing light (which is very handy at night). Those two are only on the Main Bus, which Battery 1 is now powering.

Let’s further enhance our scenario. You are flying over Nevada (quite remote and not a lot of airports) at night, 30 minutes from the nearest airport when your Alt 1 fails. When you get to the airport you are planning on landing at, you want to have your flaps and your landing light, but we don’t know how long Battery 1 will last.

The solution (this is where my technique comes in): Turn off the Battery 1 master switch. This is an easy solution to ensuring you have battery power to use your flaps and landing light. Instead of going through and shedding load, simply turn off the source. You’ll still have all the above items on the Essential Bus, which is all you need to keep safely flying. Then, when you get to your landing airport, turn Battery 1 back on to utilize your flaps and landing light.

Garmin Perspective

Cirrus wired the Garmin Perspective plane a little bit differently. There are now 2 Main Buses along with the Essential Bus. Alternator 1 runs Main Bus 1, while Alternator 2 runs Main Bus 2 and the Essential Bus. Both Alternators are running all the time. The Alternator 1 Failure procedure remains the same.

The cool thing that comes along with the second Main Bus in the Perspective is the amount of items you still have available to you in the event of an Alternator 1 failure. The only items you lose will be:
- Yaw Damper
- Landing Light
- Air Conditioner and associated components
- EVS Camera
- 12 Volt power supply in armrest
Everything else is powered off of Alternator 2. That’s not much. The only item you really want on the above list is the landing light if you are going to be landing at night.

Follow the Alternator 1 Failure procedure, then do my technique again. Turn off Battery 1 to save the battery power in order to use the landing light when needed.

Cirrus did a great job creating an all electric airplane with plenty of backups in case something fails. I focused mainly on the Alternator 1 failure here. If Alternator 2 fails, the system is wired for Alternator 1 to run everything while still charging Battery 1 and 2. No big deal.

In my experience, turning off Battery 1 to conserve battery power is just a simpler solution when shedding load in the event of a Cirrus Alternator Failure.
Reading Weather Prog Charts
ByHank Gibson January 27, 2015July 14, 2026

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.