Questions tagged [commercial-aviation]

Commercial aviation is the part of civil aviation, whether general aviation, non-scheduled service, or scheduled airline service, that involves operating aircraft for hire to transport passengers or cargo.

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How many checklists are there for a commercial pilot for the entire flight?

I wanted to know the number of times a pilot has to refer to his/her checklist for the entire flight (before startup to engine shutdown).
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Is it possible for a plane to be over fueled (and over-weight) to take off?

I've just reached my destination after 33 hours going from one European hub to another. A journey which usually takes a max of 6 from leaving my house! On the final leg of the journey, after boarding,...
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Which commercial aircraft can perform a parallel engine start?

In various Youtube videos, e.g. this one, one can see that the Boeing 787 is capable of a parallel engine start (both engines are started at the same time). Are there any other commercial aircraft ...
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969 views

Is there a procedure to safely handle a PED battery problem on a commercial flight?

On a recent flight, I heard a (somewhat unsettling announcement) from the flight attendant (paraphrasing from memory): Dear passengers, if you currently have a Samsung Galaxy Note 7 device in your ...
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Why do airlines outsource regional flying?

The three major American airlines (American, United, and Delta) all have regional brands. These brands are actually operated by other airlines (ie: SkyWest). Air Canada has a similar regional brand ...
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How long have commercial aircraft been continuously in the sky?

In 2018, it's obvious that at any moment of the day, there is at least one (and in fact many) commercial aircraft in the sky. In 1908, this was not true. Which was the last year there might have ...
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Do airlines continue operating in the vicinity of a hurricane?

Have hung around some of the aviation interest groups (like airliners.net) and tried to research this but haven't found very clear answers. Typically when a hurricane (tropical, peak wind-speed in ...
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Can you escape an aircraft through the lavatory?

In his book "Catch me if you Can", Frank Abagnale claims he evaded arrest by removing a panel in the lavatory of a VC10, climbing through it and hence escaping out of the (taxiing) aircraft through a ...
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Why are biofuels usually blended with standard jet fuel when used?

When biofuels are used in both demonstration and commercial flights, it is common for them to be mixed with standard Jet A fuel. Is this due to safety reasons, cost or due to specific properties (e.g. ...
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What safety differences exist between carrying laptops in checked versus carry-on baggage?

Recent rumors say that the laptop ban might be extended to flights originating in Europe heading for the USA. This made me think, if laptops are not safe for carriage in the cabin how can they be safe ...
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What daily commercial flight is the oldest / has been running the longest?

Out of curiosity, what flight, currently still operating, has the earliest inception? There are several ways to define this, and I expect available information will determine what definition is most ...
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1answer
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How does cost per seat-mile differ between commercial and private jets?

I was reading an article the other day that mentioned many smaller private jets are more efficient, faster, can climb quicker and land with less space than larger commercial aircraft. Some of the ...
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Which one is considered the departure time of a commercial flight?

I was wondering, the publicly announced departure time of a commercial flight, is it the ETOT (estimated takeoff time) or is it the EOBT (estimated off-block time)? Or maybe some other time?
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For the 737 Combi, How did changing the proportions of the passenger vs cargo areas work?

I am very interested in the 737 combi models and want to learn more about how they worked in practice. For the 737 Combi, How did changing the proportions of the passenger vs cargo areas work? I have ...
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Does any country issue daytime-only commercial licenses?

I got my PPL last year (EASA, UK) and I've always been interested in the commercial route. However, due to my red-green colour blindness I've failed the Ishihara, Farnsworth D15 and CAD vision tests ...
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1answer
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Why would flares be fired into the air after a flight lands?

On Monday 23rd September at about 14:30 BST my plane landed at London Stansted. Soon after landing, while the plane was at the end of its deceleration, I noticed what appeared to be two flares or ...
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1answer
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What could cause a rear twin-jet's throttle to oscillate on descent?

I rode a smaller twin-tail-engined jetliner for a few short hops last month, and I noticed that their airport approaches are much rougher than the widebody airliners I am used to. I believe that it ...
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Why are the cabin chimes one semitone lower on the Boeing 747-400 than on other aircraft? [closed]

I noticed that the cabin chimes on the Boeing 747-400 overall sound one semitone lower than on other aircraft, including the 737, 777, Airbus A320, and even the 747-8. The same semitone-lower chimes ...
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If the Concorde had an engine fail at cruise altitude, would they enter the coffin corner?

I know the coffin corner is only meant for subsonic aircraft, but if the Concorde is just cruising at Mach 1 and had an engine failure and also lost that afterburner, would it enter a coffin corner ...
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6answers
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Has a commercial jet airliner ever stalled on takeoff / at low-altitude?

In general aviation, a common reason for fatalities is low altitude stalls on takeoff or practising go-arounds. Has there ever been an incident where a commercial jet airliner stalled on takeoff / ...
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Why don't airport have heated runways to deal with winter conditions?

It is for years that I ask myself as a frequent flyer why there is no Airport using a system, like built-in electrical resistances on Runways to avoid Delays/Cancellations and even closing Airfields ...
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Why do pilots' masks have more oxygen?

When a commercial passenger airliner suffers a rapid decompression, it is critical that everybody on board gets oxygen quickly. In the passenger rows, oxygen masks connected to chemical oxygen masks ...
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What is this in the primary flight Display?

What is this in the primary flight Display ?
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Is it required to memorize checklists for better efficiency?

Military pilots are instructed throughout training that they must learn all checklists off-by-heart (in the RAF anyway). This way things get done much quicker, primarily in the event of an emergency ...
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Which aircraft did I photograph at ZRH?

I took a couple of pictures of various aircraft and I would like to know which aircraft I photographed. I have no idea, expect that all of them took off from ZRH and should be commercial airliners:
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How does an airliner adjust and move exactly over the coloured lines before stopping in front of the jetways?

How does an airliner adjust and move exactly over the coloured lines before stopping in front of the jetways?
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Did Boeing need MCAS because the 737 MAX didn’t meet FAA longitudinal stability requirements, or was it to make the MAX feel like the NG?

I’m confused on this. I’ve read in multiple different places that MCAS was required due to the easier stick forces at a high angle of attack and a high G force, and because of this, the Max didn’t ...
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If a winglet disconnected from an airplane mid-flight, what would be the consequences?

I've always knew that the winglets on an aircraft provide lift. But what would happen if a winglet disconnected from one wing while a winglet was on another wing?
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How prevalent is traditional radar tracking of commercial aircraft?

In many media reports regarding air incidents such as AirAsia Flight QZ8501: What We Know About the Missing Plane from NBC News I often see a phrase such as the following: By the time it had been ...
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1answer
502 views

Most time-consuming tasks while a plane is on the ground

How long should commercial planes stay on the ground after landing before they can take off again? What is the most time-consuming thing/task/operation that happens during this time? Is downloading ...
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In what ways is color blindness an issue in modern jet airliners?

What are the specific problems in modern jet airliner cockpits or in piloting operations that would prevent a person with any type or severity of color blindness from completing his/her job to the ...
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Are there any autopilots that are capable of landing a damaged aircraft better than any human?

How close are we to commercial aircraft with autopilots that can, as safely as theoretically possible, land an aircraft with damaged, missing, or otherwise inoperative control surfaces; or altered ...
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876 views

What is the tablet/application being used in this 737?

In this video (marker 2:32), you can see that the captain has a tablet mounted to his left with some sort of application open in it. It looks like an iPad (though I could be wrong), but what I'm ...
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How much do the fan blades of a GE90-115b stretch when the engine is spinning at maximum RPM?

I've always wondered what kind of stresses and resulting deformations jet engines are subjected to when running.
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1answer
332 views

Are there 5000+ companies with IATA (two-character) codes?

From Wikipedia > List of Airlines There are around 5000 airlines with IATA codes. From Wikipedia > List of Airlines Codes IATA airline designators [..] are two-character codes [..] and ...
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What effect would an air-to-air GPS jamming system have?

I just noticed an interesting AIC: NOTIFICATION OF GPS JAMMING EXERCISE – HEBRIDES RANGES DURING PERIOD 21 JULY - 1 AUGUST 2014. PDF available on Eurocontrol (official) or Scribd (mirror). The ...
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1answer
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What kind of warranty comes with a commercial aircraft?

Just wondering what the warranty is like. Can an airline simply decide to give every single aircraft back for the money they paid? Assuming they were unhappy with the results. Will the manufacturers ...
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1answer
863 views

Is it plausible to forget the cockpit unlocking code?

Is it plausible for a pilot inside the cockpit to be incapacitated and that at the same time the pilot locked outside simply doesn't remember the code or the procedure for entering the cockpit?
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Can (part of) the fuel in your tanks be considered “property carried for compensation or hire”?

This question brings up that an experimental category aircraft cannot carry "persons or property for compensation or hire". However, this raises a question regarding civil-registry refueling tankers (...
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Would hydrogen fuel tanks on an airplane increase lift?

Since hydrogen is lighter than air, would hydrogen fuel tanks help provide lift for the airplane?
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Why did Air France retire Concorde? [closed]

It was developed by British Airways and Air France in the 1970s as the first supersonic passenger/civilian airplane.
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Why hasn't there ever been a large 4-engine commercial airplane with 2 engines on the wings and 2 engines at the tail?

This question refers to large passenger jet aircraft only, which I define as being able to carry at least 100 people. There have been many 2-, 3-, and 4-engined planes in this category. Some of the ...
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How do I locate a list of restrictions that would prevent a pilot from flying in the US?

I have a privacy preserving technology that could conceivably help prevent the Germanwings crash of 2014. The idea would be there is a long list of issues that would prohibit a pilot from flying ...
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What happens if a commercial airplanes navigation system completely failed during a flight?

What would happen if all of the the navigation systems (such as GPS & INS) in a commercial aircraft completely failed? Could the aircraft land safely without all the navigation aids?
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How likely could there be a loss of cabin pressure?

You often on commercial aircraft (whilst on the ground to the runway) hear on the safety video: in the event of a loss of cabin pressure, oxygen marks will be released from the panel .... What ...
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970 views

Is wheel well overheat detection (not brake temperature sensor) necessary for commercial jet aircraft?

Some aircraft do have this detection system (many Boeing aircraft), some do not. Why? What's the main purpose of the wheel well temperature detection system, even though there are brake temperature ...
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What is a Cruise Captain?

I wonder what is a Cruise Captain, albeit I assume they are here to fly the cruise phase. Differences in responsibility / authority with a Captain? From training / certificate standpoint, what is ...
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How do flaps help an aircraft take off at a lower speed, yet cause drag at the same time?

Wouldn’t the drag caused by the flaps just decrease the acceleration, so, although they can lift off at a lower speed, wouldn’t it be faster to just use no flaps and rotate at the higher speed that is ...
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1answer
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What are the correct names of the parking spaces for turn-around?

A plane can be parked at the terminal and the passengers can board through a jet bridge. Also it can be parked somewhere else, far away from the terminal and the passengers would need to take the bus ...
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Can an Iranian citizen attain ATP in the United States?

I know that you can be a pilot in the U.S. as a foreigner. However, are there any special regulations regarding citizens of Iran because of political issues?

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