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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28
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3answers
17k views

Why are airlines so concerned with checked baggage weight?

Why is it that commercial airlines are so concerned with checked baggage weight, such that they charge extra just for the privilege of checking in a suitcase with a limited weight (e.g. 15kg), and ...
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3answers
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Is it technically viable to reintroduce sleeping berths?

The airlines are always trying to jam more passengers into each plane. I'm smaller than today's average, and I'm still often uncomfortable in a standard Economy seat. It occurred to me that in the ...
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2answers
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How far ahead does an airline know which aircraft you will be flying on?

My favorite features of the United Airlines app are: you are able to see what specific aircraft will be operating your flight you are able to trace that aircraft back indefinitely via the "Where is ...
8
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2answers
947 views

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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4answers
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Are pilot YouTubers breaking any rules?

Recently, I've been watching a few YouTubers (mostly FOs) who make great videos like this: Then I realized... They must spend a lot of time setting up cameras, ...
8
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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 ...
5
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1answer
238 views

After the most recent US instructions, are there any prohibitions against transporting spare lithium ion/metal batteries in the cabin?

Per the recent directive from Transportation Security Administration (TSA), except for medical devices, electronic devices which are larger than a cell phone/smart phone cannot be carried in the cabin ...
4
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2answers
414 views

If Boeing used two sensors instead of one simultaneously, wouldn’t they be in the same position today?

this article states that the original version of MCAS was suppose to rely on two sensors, One sensor will detect a high angle of attack, therefore activating MCAS The other sensor will detect a high ...
28
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7answers
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Why bother having different engine options on one aircraft?

When an airline purchases a new passenger jet, they often have a choice of engines (from different manufacturers). Why is this? I would expect that one of the engine options is "best" and that all ...
26
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3answers
6k views

What is the difference between being instructed to land “as soon as possible” or “at nearest suitable airport”?

On commercial airliners, the FCOM (Flight Crew Operating Manual) sometimes gives instructions to the pilots to land sooner than planned, following various in-flight failures or emergencies. For ...
17
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1answer
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Which commuter flight was forced to land in a cornfield in '96 or '97?

Last night a friend's wife was describing her experience as a child being on a flight that encountered a flock of Canadian geese, where at least one engine was lost to a bird strike. I suspect both ...
15
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1answer
2k views

Which commercial aircraft are capable of computer-only landings, without human assistance?

Currently what models of commercial aircraft are capable of landing and safely stopping the aircraft, without any human assistance, other than inputting instructions to the onboard computers.
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3answers
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How do airplanes get stacked in a holding pattern?

This question prompted me to wonder how it works at a major airport. Let's say four airliners all are scheduled to arrive within a few minutes of each other to a major airport, perhaps from the four ...
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3answers
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What is the purpose exactly of a ‘Control Check’?

I recently watched an Air Crash Investigation episode where Qantas flight 32 lost an engine shortly after takeoff. It was revealed that a stud pipe in a Rolls-Royce engine was made incorrectly, ...
14
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2answers
3k views

Is there any disadvantage to having the de-icing system on?

I was watching Mayday S11E02 about West Caribbean airways flight 708 and the pilots turned off the de-icing system partway through the flight. It's not why it crashed, but I was curious as to if there ...
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2answers
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What is this? Multiple small cracks in passenger window

I have seen this many times in typically older aircraft passenger windows and on a recent flight from Sydney to Melbourne I took the following pictures. It appears as if there are small cracks in the ...
12
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1answer
1k views

Why would a copilot's window be shaded/covered?

I'm sitting in a small regional airport in Vietnam and I've noticed something odd about the aircraft I've seen arriving and departing. All of these aircraft appear to have the copilot-side window ...
12
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2answers
13k views

Does laser eye surgery prevent me from getting an EASA pilot licence?

I am a masters student in Germany and I am very much interested in pilot training. I had a laser eye surgery (LASIK) 3 years ago. I heard that people who got it are not eligible as a pilot. Is this ...
12
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1answer
5k views

When did inflight smoking become (widely) prohibited?

Currently in my mid-'30s, I can still clearly remember the time when half of the plane's passengers were smoking throughout a long-haul flight. I know commercial flights became non-smoking sometime in ...
11
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1answer
3k views

Are there any airports that do not have an IATA code but have a huge number of traffic?

I am collecting a list of all airports in the world for my project, at present I have 46000 airports in my database but only 7000 airports have IATA code. So my question is, if I only take 7000 ...
11
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1answer
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Are CVR and FDR reset after every flight?

Recording the thousands of parameters and voice conversations must take a huge amount of storage, and so I am wondering, how frequently is this data "deleted", so it can be used again? For example, ...
10
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2answers
2k views

What was the first commercial aircraft to have a 'built-in' oxygen system?

(Source) Boeing 307 of TWA, the 307 was the first pressurized passenger aircraft. The 307 (c. 1938) flew as high as 23,300 ft, lower than the jets of nowadays, and did not have a built-in oxygen ...
10
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2answers
4k views

At what minimum occupancy ratio can airlines operate profitably?

Often, airlines are unable to sell all the seats of a flight and some seats go unsold. So, with what occupancy ratio is it usually profitable for an airline to operate? For example, Recently, a ...
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3answers
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Who has final say over an aircraft flight path? [duplicate]

This question got me thinking... if there was an emergency situation on a commercial airliner (let's say both engines have flamed out or something) and the pilot wants to do one thing (land in the sea)...
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1answer
3k views

Why do I hear the “real” engine noise only when the plane is on the runway?

I understand that (from other answers) planes taxi using engines only. But, when I'm a passenger, then why do I hear the "real" engine noise only when the plane is on the runway? So, if planes taxi ...
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2answers
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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 ...
6
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3answers
852 views

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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3answers
3k views

What would happen if one of the engines failed during takeoff and other engine is on full power?

Assume the left engine failed and the right engine is at full power. The pilot has pulled his nose up and turned towards left. Is it possible for him to land the plane on a runway to his left? The ...
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2answers
19k views

What is an Aircraft Overhaul?

While reading the FAA presentation on Part 135 Airworthiness Requirements, on slide 7 where it discusses maintenance, the list includes inspection, overhaul, repair, preservation, and the ...
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4answers
11k views

How many lives would be saved if the airlines turned all the seats around?

The psychology and history of forward-facing seats has been answered well already here. I ask instead about how bad it is that seats are forward-facing. For context, I was looking through Wikipedia's ...
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6answers
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Do multiple go-arounds on the same flight happen in commercial aviation?

I know that go-arounds are pretty rare: somewhere around 2 per 1000 approaches. In large commercial aircraft the rate is probably even lower due to crew quality, instrumentation, conservative ...
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2answers
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Are there commercial airplanes that are still flyable without any electricity? [duplicate]

I have seen the first episode of Revolution yesterday and there are all kinds of airplanes just falling from the sky because of complete loss of electricity. I know most if not all modern planes use ...
15
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1answer
3k views

Did Flight Engineers progress to be pilots?

When 3 man cockpits were common place on commercial aircraft what was the career progression of a Flight Engineer like? Did FE's normally transition to be pilots? I'm not trying to insinuate here ...
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2answers
5k views

How often does fuel dumping from planes in flight actually occur?

There are a couple of questions about the emergency procedure of fuel dumping, used to reduce the weight of airplanes to be able to land. This is certainly interesting, regarding environmental ...
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2answers
5k views

What are the aircraft requirements to legally offer commercial sightseeing flights in a C-172?

When I retire in a couple years I want to fly my 172 and make some money. Even if I just break even that's ok. My CFI certificate has expired and I don't want the hassle of having it re-instated. I ...
10
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1answer
3k views

What means do airline ground staff have to converse with pilots in flight?

It seems that airline operational staff on the ground have the ability to initiate verbal communication with airline pilots on at least some airliners, in flight. Obviously pilots can communicate ...
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3answers
2k views

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 ...
10
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3answers
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Is the A330F main deck cargo compartment pressurized? If not, what is the purpose of the structural cargo access door?

I know there is a related question already asking if cargo holds in general are pressurized. My question is specifically about the A330-243F in the below photograph. That looks like a pressure ...
9
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1answer
1k views

How do pilots hold the runway centerline during takeoff?

Holding the taxiway centerline during taxi is usually done with the nose gear tiller in commercial aircraft. During take-off, until which speed is the tiller used before using pedals to control runway ...
9
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1answer
1k views

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 ...
8
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1answer
687 views

How frequent are unpublished holding patterns outside general aviation?

Flight regulations say that ATC may put an aircraft in a holding pattern, which is not published in the charts but I couldn't find any such case in FlightAware. I have been searching on the Internet ...
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2answers
2k views

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).
7
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1answer
629 views

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 ...
7
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1answer
2k views

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?
6
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2answers
981 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 ...
6
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1answer
979 views

Why are my friends flying over Norway, Sweden and Denmark from Manchester to Vancouver?

I'll start off by letting you all know that I am 100% blind, so I won't be able to read a map. My friend Hudson came over to Canada with her friends last year, September 1 or August 31, 2016. She ...
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4answers
1k views

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?
6
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1answer
354 views

Why does Google's Wing drone have dimples?

The question What operational aspects of Alphabet's Wing drone delivery service will be the same as that of an airline? includes a cropped photo of a google drone from FAA Certifies Google's Wing ...
5
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1answer
285 views

When will Europe allow phones (to communicate) on planes?

Currently USA has allowed phones to be used in commercial flights, is there a similar ruling coming to Europe or will my mid air Bluetooth battles have to wait?
5
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2answers
408 views

Can pilots land an aircraft with only the use of throttles?

Presuming that all other means of controlling an aircraft are unavailable to a pilot, can a pilot land a commercial airliner safely by using only the throttles and are pilots trained to do so?