• READ MORE: Why Aren’t Cessna 140s/150s Considered Light Sport Aircraft?

Answer: The biplanes you mention—Stearmans, Kaydets, and Navy SNJs—were mostly likey trainers.

They were yellow because if they went down on a training mission—as they often did—they were easier to spot from the air.

• READ MORE: How Can an Aircraft Get Struck by Lightning Without a Close Thunderstorm?

Often the trainees made unscheduled off-airport landings in hayfields, swamps, forests, and the desert. Having an aircraft painted to look like terrain would have made it more difficult to find them.

The post Why Are Some Military Airplanes Gold? appeared first on FLYING Magazine.

Answer: The LSA rule as it stands limits aircraft to a gross weight of 1,320 pounds for land aircraft.

• READ MORE: Pilots Have Questions When It Comes to MOSAIC

Gross weight is determined when the aircraft is certificated. The Cessna 140 GW is 1,450 pounds, and the Cessna 150 is between 1,500 and 1,600 pounds, depending on the year of manufacture. You can take the other seat out and fly partial fuel, and that will make the aircraft lighter, but it won’t change the certificated gross weight.

Understand that the LSA rule is under review with MOSAIC, and if approved as written, will increase the gross weight of aircraft to 3,600 pounds.

When that transpires, many of the single-engine light trainers flown today in the utility and normal category will likely become LSA compliant.

The post Why Aren’t Cessna 140s/150s Considered Light Sport Aircraft? appeared first on FLYING Magazine.

Answer: There are many observed cases of lightning strikes to aircraft inside or near clouds that had not previously produced natural lightning. Studies show that about 90 percent of the lightning strikes to aircraft are thought to be initiated by the presence of the aircraft itself. The scary statistic, however, is that 40 percent of all discharges involving airborne aircraft occurred in areas where no thunderstorms were reported.

Apollo 12

One of the more famous cases of aircraft-initiated lightning is the Apollo 12 launch at the Kennedy Space Center, Florida, in November 1969. The Saturn V rocket was struck not once but twice on its way into orbit.

According to the 1970 NASA findings, other than these two strikes, there was no other lightning activity reported six hours before or six hours after the launch. At the time of the launch, a cold front was moving south into the launch area. Broken towering cumulus topping out at 23,000 feet with light to moderate rain showers were reported.

Rarely Fatal

Damage to airborne aircraft struck by lightning includes minor pitting or scarring to the aircraft’s skin to complete destruction of the aircraft.

Besides direct damage at the point of entry and/or exit, indirect effects that include the loss of VHF communication, loss of navigation equipment, and loss of instrument panel gauges are also possible.

In 1963, a Pan American Airlines Boeing 707 over Elkton, Maryland, was struck by lightning while in a holding pattern at 5,000 feet. The outermost fuel tank in the left wing exploded causing two other fuel tanks to follow suit. There were no survivors.  

• READ MORE: Does the FAA Punish Pilots for Logbook Mistakes?

It’s certainly true that a catastrophic accident such as this is extremely rare, but lightning strikes to aircraft are more common than you might imagine—most of which are aircraft-initiated strikes.

Based on compiled data it is estimated that in the U.S. a commercial airliner is struck once for every 3,000 hours flown. That’s an equivalent of about one strike each year. 

Melting Level

While aircraft-initiated lightning is still being actively studied, there are a few important characteristics to consider.

Based on the current research, it doesn’t take flying in or near a mature thunderstorm to become the victim of a lightning strike. The mere presence of the aircraft in an environment conducive to an electrical discharge is all that is necessary.

Most of the aircraft-initiated lightning strikes occur when the aircraft is flying at or near the melting level (0 degrees Celsius). The preferred temperatures include a range from plus-3 C to minus-5 C, with the highest number of incidents occurring right at the melting level.  

A few of the strikes down low are the result of an aircraft intercepting a lightning strike in progress. Essentially, this is the case of being in the wrong place at the wrong time.

On the other hand, aircraft-initiated strikes are observed the most are between 3 km and 5 km or 10,000 to 16,000 feet during the warm season. Once again, temperature is a key factor. The melting level that typically occurs is in this same range of altitudes throughout the summer months.  

Low-Topped Convection

In general, natural lightning in deep, moist convection doesn’t form until the tops of the storm build well above the melting level.

For lightning to form, three ingredients must be simultaneously present. These include vapor-born ice crystals, graupel, and supercooled liquid water. If any one of these three is missing in sufficient quantities, natural lightning doesn’t generally occur, but this not to say the cloud is void of all electrical activity—some still remains.    

Therefore, an aircraft-initiated lightning strike typically occurs within local air mass instability within low-topped convection.

Often low-topped convection doesn’t produce natural lightning. The updrafts are rather weak in comparison to those that do produce lightning. Consequently, the updrafts do not carry enough supercooled liquid water into the upper part of the cloud where it is needed. 

• READ MORE: What Are Echo Tops?

Clouds and Precipitation

An overwhelming number of lightning strikes occur within the cloud itself. Only a very small percentage of strikes occur outside of the cloud boundary or below the cloud.

Here’s the key: A very large percentage of the strikes occur within precipitation to include rain, snow, snow grains, ice pellets, and hail. It is not uncommon to find a mixture of these near the melting level. 

Keep Your Distance?

The FAA encourages all pilots to keep a safe distance from an active thunderstorm for obvious reasons.

Unfortunately, this practice alone isn’t quite enough. Even when thunderstorms (natural lightning) are not occurring or expected to occur, an aircraft-initiated lightning strike can still be a risk.

In order to avoid an encounter with lightning, the best advice is to remain in cloud-free air whenever possible, especially when the atmosphere is conditionally unstable and capable of producing marginally deep, moist convection extending well above the melting level.

While it may be difficult, the best advice is to operate outside of areas of precipitation and minimize your time in clouds and precipitation near the melting level.

The post How Can an Aircraft Get Struck by Lightning Without a Close Thunderstorm? appeared first on FLYING Magazine.

Answer: The short answer is no. But unfortunately there’s a lot of “tribal knowledge” surrounding logbooks and what can happen. FLYING contacted the FAA for the correct information.

Endorsements

The CFI should be familiar with Advisory Circular 61-65 (H), which contains the endorsements an instructor is allowed to give. The language is copied verbatim. If you are a learner pilot, the first endorsement you will get is the TSA citizenship verification endorsement in accordance with 49 CFR 1552.3(h).

FAR 61.51 covers pilot logbooks and details how to log “training time and aeronautical experience.” It states that each person must document and record the following time in a manner acceptable to the administrator:

(1) Training and  aeronautical experience used to meet the requirements for a certificate, rating, or flight review of this part.

(2) The aeronautical experience required for meeting the recent flight experience requirements of this part.

Part B covers logbook entries, stating that “for the purposes of meeting the requirements of paragraph (a) of this section, each person must enter the following information for each flight or lesson logged:

(1) General—

(i) Date.

(ii) Total flight time or lesson time.

(iii) Location where the aircraft departed and arrived, or for lessons in a full flight simulator or flight training device, the location where the lesson occurred.

(iv) Type and identification of aircraft, full flight simulator, flight training device, or aviation training device, as appropriate.”

The savvy CFI logs all instruction given, including ground time and the topics covered. If the learner takes the time to be there, they should get credit for the experience.

As far as “messing up an entry in a logbook,” FLYING posed a series of questions gleaned from scenarios encountered in more than 30 years of flight training on both sides of the CFI certificate.

Ink Color

I start with this because when I was working on my CFII certificate, I logged time in my own logbook with blue ink and the CFII who I was training with positively clutched her pearls over that one.

According to the FAA, they do not require a specific ink color for a paper logbook.

The logging of time spent using an advanced aviation training device (AATD) can be controversial as there are some CFIs who refuse to do it, saying it will “ruin” a logbook.

According to the FAA: “Simply logging time (in any capacity) does not ruin a logbook, but the pilot must ensure they are properly categorizing the flight time logged. For example, if a pilot decided to record their time spent using an AATD in their logbook, that is acceptable. However, the AATD time could not be counted toward cross-country time for pilot certification.”

Set Up Your Own Logbook

As most logbooks have a few blank columns, it’s a good idea to designate them to suit your needs. For example, you might have one for ground training received or given, AATD, solo flight, etc. You can have an entire section set aside for ground instruction, dual instruction given, etc.

Endorsements

There are many logbooks with preprinted endorsements, but you may run out of room. The FAA does not require endorsements to be on a specific page or in a specific location in the logbook. 

“Endorsements can be made in a pilot’s logbook or other documents acceptable to the administrator if the learner uses an electronic logbook rather than paper, in order to show they meet the aeronautical experience requirements for the certificate or rating that may be in paper form or electronic,” FAA said. “Keep in mind that many endorsements require a CFI’s signature which may not work with an electronic logbook.” 

For check rides most learners print out spreadsheets of their experience and have the CFI sign those.

Mistakes

Mistakes do happen. Usually they are math errors.

Filling out a logbook takes a fair amount of concentration, as does totaling up the columns and double checking the math before you sign the page. Take care when you do this, and please be extra careful when it comes to totaling up required experience for a check ride. You do not want a learner to go for a check ride and be turned away because they are missing 0.2 of something, or a takeoff and night landing or two. 

If you make a mistake, correct it. Please note that the FAA does not have specific guidance on correcting logbook errors. According to the source at the FAA, “choosing a particular correction style (white-out, crossing out the error and correcting, crossing out the line and making a new entry, etc.) is up to the pilot.”

The post Does the FAA Punish Pilots for Logbook Mistakes? appeared first on FLYING Magazine.

Answer: Pilot candidates learn about the role of the NTSB because it’s important to know what constitutes an accident or an incident, and when the agency needs to be notified. The criteria for both is listed under Part 830 in the  (Federal Aviation Regulations/ Aeronautical Information Manual FAR/AIM).

Talking about accidents in ground school helps learners recognize risks that were not properly managed by the accident pilots. This leads to discussion about ways to identify and develop ways to mitigate those risks.

By deconstructing previous accidents, pilots can learn from the mistakes of others and develop the skill to mitigate risk by seeking an alternative course of action resulting in a better outcome.

The post Why Are Flight Students Taught About the NTSB in Ground School? appeared first on FLYING Magazine.

Answer: In the scenario you described and since ATC asked you to do the maneuver in the pattern, it’s not unexpected.

• READ MORE: What Are Echo Tops?

S-turns and 360-degree turns are methods of creating space between aircraft. This keeps you from overtaking another, most likely slower, aircraft. It’s similar to the way bands march in place for a few minutes during parades to create more space between them and the parade floats, horses, or other bands ahead of them. At a towered airport, if the controller tells you to do this, they are trying to create space between you and the aircraft you are following.

While in the pattern, listen carefully for what kind of aircraft you are sharing space with. If you are flying a Cessna 182 or a twin and there is a slower aircraft like a Cessna Skycatcher or Piper Cub ahead of you, you’re probably going to need to slow down.

• READ MORE: What to Do When You Lose Your Logbook

At all times it is up to the pilot in command (PIC) to determine if it is safe to do these maneuvers If ATC asks you to do a 360-degree turn and there is an aircraft in the way, don’t do it and advise “unable.” At a nontowered airport, 360-degree turns in the pattern are a little dicey. A better option is to depart the pattern and reenter on the 45.

The post When Is It OK to Perform Unexpected Maneuvers in the Pattern? appeared first on FLYING Magazine.

Answer: The short answer is no. Echo top height is a volume product that originates from the NWS WSR-88D NEXRAD Doppler radars.

This is the same network of radars that is used to build the familiar radar mosaic pilots readily use in the cockpit. While not provided in the FIS-B broadcast, the echo top height product, however, is arguably the most misused data that is broadcast by SiriusXM to your satellite-based weather receiver.

Despite what many pilots are taught, this product does not represent the height of the cloud tops and should never be used as such since it is often likely to produce unreliable and inconsistent results.

When looking at any ground-based radar depiction, the colors you see are mapped to a quantity in decibels of Z, often abbreviated dBZ, where Z is the reflectivity parameter. As the name implies, reflectivity is the amount of energy that is returned (reflected) back to the receiver after hitting a target.

For precipitation, these targets are called hydrometeors that include rain, snow, ice pellets, and hail. There are a few exceptions, but generally speaking, the higher the dBZ value, the heavier the precipitation.

All deep, moist convection or thunderstorms have both a cloud top (the highest point of the cloud as measured from sea level) and top of the precipitation core within the convection. The “top” of the precipitation core is defined as the msl height of the highest radar reflectivity of 18 dBZ. This altitude is referred to as the echo top height.   

For example, imagine taking a vertical “slice” through a typical thunderstorm, such as the one shown above. The white dashed line shows the west-to-east slice with the echo top height shown on the left and the base reflectivity from the lowest elevation angle shown on the right. The radar depiction on the right is the view most familiar to a pilot.

However, to better illustrate how the echo tops are determined, the depiction below is this same slice from above that is shown as a vertical cross section of the radar reflectivity. In other words, it depicts all possible elevation angles from the radar’s volume scan through this slice.

The colors are the reflectivity values in dBZ. The highest values shown in the precipitation core are about 55-60 dBZ and are all below about 7 kilometers (about 23,000 feet). As height increases in the core, notice the values drop off to less than 15 dBZ.

By connecting the points where the values in the core drop off to the 18 dBZ value, this represents the echo top height (shown by the white squiggly line). For this cell, the highest point in this cross-section is 17 kilometers or roughly 56,000 feet msl.

Cloud top height, on the other hand, is higher than the echo top height. In fact, it can be 5,000 to 10,000 feet higher in some of the most intense storms.

The visible satellite image below is a good example of thunderstorms with overshooting tops. Given the time of day, the highest tops actually cast a shadow on the thunderstorm anvil. This is the column of air in the thunderstorm that will usually have the highest echo tops due to the vigorous updraft. 

Echo top heights are specifically used by forecasters to identify the most significant storms by locating the highest echo regions. Stronger updrafts are seen in regions where the highest echo tops are located.

Moreover, the parameter that has the highest apparent correlation with lightning is not the highest cloud top but rather the highest detected radar echo top of 30 dBZ or greater.

Shown above is the SiriusXM composite radar mosaic shown with the Garmin Pilot app. In addition to the radar reflectivity, storm cell identification tracking (SCIT) markers are shown.

These attempt to identify the movement and echo top height of various cells in the radar mosaic. The height provided is measured in hundreds of feet. If there’s an arrow, this defines the direction of movement, and the end of the arrow represents where the cell might be located in the next 60 minutes given its current speed and direction of movement.  

Lastly, this may seem obvious, but echo tops are not going to help identify the vertical extent of many weather systems unless those clouds are producing some kind of precipitation in the form of rain, snow, hail, or ice pellets.

Therefore, a stratus deck, even one that has some depth, won’t likely be picked up by the radar. In fact, it’s not likely you will see echo tops shown below 20,000 feet because of this. Echo tops are more appropriate for convective precipitation where the clouds have significant vertical depth.  

The post What Are Echo Tops? appeared first on FLYING Magazine.

Answer: You’re in luck. The paper student pilot certificate was issued by the aviation medical examiner (AME) and not done through IACRA as we know it, so it is doubtful the learner already has an IACRA account.

• READ MORE: Is There an Official Weather Briefing

All you have to do is sit down with the learner and create a new application. Simply follow the prompts and fill out the application. In a few weeks he will get a plastic student pilot certificate in the mail.

Also, don’t forget to also verify the learner’s citizenship and give him a TSA endorsement, which have become requirements since 2002.

Do you have a question about aviation that’s been bugging you? Ask us anything you’ve ever wanted to know about aviation. Our experts in general aviation, flight training, aircraft, avionics, and more may attempt to answer your question in a future article.

The post How Do You Obtain a Student Pilot Certificate After a Break in Training? appeared first on FLYING Magazine.

• READ MORE: What Is the Rudder Used for in Flying?

Answer: According to an FAA spokesperson:  “Generally speaking, the FAA will accept [a pilot’s] last airman certificate application (Form 8710-1) or what they reported on their last medical application (Form 8500-8).” You should have access to at least one of those documents.

Pro tip: Moving forward, you may want to invest in an electronic logbook and save the information to the cloud, or at least record a digital image of each page of the paper logbook when you fill it up. If you rent aircraft, sometimes you can re-create your experience by cross-referencing your receipts. 

• READ MORE: Is There an Official Weather Briefing?

Do you have a question about aviation that’s been bugging you? Ask us anything you’ve ever wanted to know about aviation. Our experts in general aviation, flight training, aircraft, avionics, and more may attempt to answer your question in a future article.

The post What to Do When You Lose Your Logbook appeared first on FLYING Magazine.

Answer: Rudder controls the side-to-side motion of the nose of the airplane—the technical term for this is yaw.

To make the airplane turn (bank), the pilot moves the yoke or stick in the direction they want to turn. This activates the ailerons, which are the outboard, moveable panels on the wings.

The downward-deflected panel is on the outside of the turn, and as the downward deflection increases the surface area of the wing, it generates more lift. The aircraft nose yaws toward the side with the wing generating more lift. From the pilot’s perspective, that yaw is in the opposite direction of the turn. As this turn is opposite to the direction of the turn the pilot wants, the technical term for this is adverse yaw. 

In the airplane, banking without using the rudders feels a little bit like someone pulling you sideways by the seat of your pants. It is poor airmanship as it results in an uncoordinated turn.

In an aircraft with a turn coordinator or slip skid indicator (the instrument that has a tube and ball in it that acts in response to lateral motion), note that if the airplane is banked only with aileron, the ball will be to the outside of the turn. To correct this, the pilot steps on the rudder on the same side the ball is deflecting to. This corrects the adverse yaw.  “Step on the ball” is the phrase you often hear. When flying an aircraft with a glass panel that has a triangle with a lateral moving base, the phrase “step on the line” is used.

The rudder controls the adverse yaw, and when correctly applied results in a coordinated (smoother) turn.

For more information refer to the Pilot’s Handbook of Aeronautical Knowledge (available on the FAA website or at brick-and-mortar stores) in Chapter 6, Flight Controls.

The post What Is the Rudder Used for in Flying? appeared first on FLYING Magazine.