Questions tagged [safety]

Safety includes all aspects of protecting aircraft, passengers and crew from accidents, mistakes and other potentially dangerous situations.

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10
votes
1answer
963 views

What is the maximum acceptable gap between the jet bridge and airplane door?

I noticed on an American Airline flight a gap of about 4 inches between the floor of the bridge and the airplane. Wide enough that if the passenger is not paying attention to the floor the foot may ...
0
votes
1answer
125 views

What are the differences between the two main brace positions? [duplicate]

Why are there two different brace positions (pictured below) ? (If there is a difference between the official and true reason, please state both. In many planes the reduced seating spacing does not ...
2
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3answers
334 views

How do pilots decide whether to circumnavigate bad weather?

How does an airline pilot decide in the air whether to circumnavigate or fly through bad weather visibly looming ahead and/or displayed on the weather radar ?
1
vote
1answer
139 views

What is an “unsafe airline”? [closed]

Question: Is there any internationally accepted definition for what an "unsafe airline" is based on objective criteria (e.g. fatalities per million passengers) ? Or is there an international standard ...
7
votes
1answer
327 views

What's with this non-exit Exit sign on Delta CRJs?

I have the pleasure of frequently flying Delta (i.e. Delta Connection) flights on CRJ-700 and CRJ-900 aircraft. All of them have a bogus EXIT sign between First Class and the main cabin: This is ...
20
votes
2answers
6k views

Why do commercial helo pilots wear helmets?

I've been on my fair share of commercial helo rides, primarily in Canada. Over the course of more than ten rides in three different kind of helos (Bell 407, 412, and I think one other) there was only ...
10
votes
2answers
5k views

Which airplane types never crashed? [closed]

Is there an airplane that never crashed? Or more specifically, without any crash history on any database. By crash, let's say any accident / incident which resulted in damage to the airplane and/or ...
20
votes
2answers
1k views

Are controllers aware of TCAS RA taking place?

When the TCAS issues a Resolution Advisory (RA) which contradicts an ATC instruction, the RA takes priority. Are controllers aware (notified on their screen) that a RA has been issued between two ...
2
votes
0answers
103 views

Would it be possible to start a modern airliner from cold & dark during flight? [closed]

Imagine a suicidal pilot or disturbed passenger who gets access to cockpit, messes with the buttons. He shuts down engines, IRS, and battery, it's the middle of the night at cruise altitude. Would it ...
24
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5answers
5k views

Why can't airline pilots listen to music while flying? [duplicate]

In an interview I read, a 747 captain (Mark Vanhoenacker, an American British Airways pilot) says he doesn't understand why he cannot listen to music inflight, when for example surgeons – who ...
32
votes
2answers
9k views

How do pilots rest on long-haul flights?

When flying on a long-haul airliner flight in economy, often I find it very hard to fall asleep. However, when off cockpit duties, they still have to get rest so that they are able to control the ...
2
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0answers
78 views

What is a possible reason for an L-1011 wing fuel tank overflow? [duplicate]

I was on a TWA Charter flight from Boston to Montego Bay Jamaica in 1989. During pushback from the gate, the right wing began to leak jetfuel (like gallons pouring out of the wing). They stopped the ...
36
votes
3answers
59k views

How do aircraft keep fuel from freezing while in flight?

On aircraft which fly above 30,000 feet, the temperature can often can get to temperatures below Jet-A's freezing point. For example: at 36,000 feet the standard outside air temperature is -56.5°C (-...
17
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8answers
6k views

What items could you bring on-board to maximise your chance of survival in an emergency?

A question on Travel (Are parachutes allowed on airplanes as cabin baggage?) got me to wondering: hypothetically, what items could the "über-paranoid" passenger or pilot bring on-board to potentially ...
2
votes
2answers
265 views

How do flight crew train/demonstrate ditching evacuation?

In case of evacuation, flight crew can train and demonstrate their ability with a real plane and test passengers. However; how can one be trained in case of ditching ? Obviously, it would be quite ...
5
votes
1answer
810 views

Will an Airbus A320 plane go into an unrecoverable nosedive and crash if a single angle of attack sensor fails, like on Lion Air JT610?

For example, has an Airbus gone from cruise flight into an automated unrecoverable nose dive until it hit the ground because an AOA sensor failed in flight? Moreso, are there any cases of an AOA ...
26
votes
3answers
3k views

Is it safe to roll an airplane that isn't approved for it?

I have heard of pilots rolling airplanes that aren't approved for it (Cessna 172, Learjets, etc.), and other than the obvious legal issues, are there any mechanical or safety reasons to avoid it? ...
12
votes
1answer
3k views

Would the wings of a Boeing 787 be snapped off in the same turbulence in which a DC-8 lost an engine and parts of a wing?

From forbes.com: In 1992, a DC 8 cargo aircraft suffered turbulence so severe over the Front Range of Colorado’s Rocky Mountains that its left outboard engine was completely ripped off as well as ...
1
vote
0answers
61 views

What is the specific FAA regulation with regards to a pilot dropping jumpers into a solid cloud base? [duplicate]

What is the FAA regulation with regards to a pilot dropping jumpers into a solid cloud base? I saw some parachute jumpers come through a solid cloud layer with a base at around 1300 AGL. They landed ...
6
votes
1answer
2k views

How tight should passengers wear the seat belt?

How tight should a passenger wear the seat belt? During takeoff and landing and other moments the seat belt sign is on, I usually pull the belt as tight as possible. This is little uncomfortable, so ...
7
votes
2answers
904 views

Is there a way, by which an airline or ATC would be alerted, if both pilots are asleep or incapacitated?

There are various questions around, which deals with what happens if both pilots are incapacitated, but my question is different. I want to ask, is there a way by which an airline or ATC is alerted ...
2
votes
1answer
1k views

Can pilots smoke in the cockpit of an airliner?

An answer on travel.se suggests that some pilots are smoking on long-distance passenger flights. Can passenger airliner pilots smoke if both the captain and first officer agree it’s ok? If I recall, ...
5
votes
1answer
257 views

Do special procedures exist to limit pilot workload during pilot incapacitation?

Although pilot incapacitation is rare, the website avherald.com lists several occurrances of flight crew incapacitation, alone two events reported yesterday. FAA AC 25.1523-1 requires all aircraft ...
6
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2answers
3k views

If both pilots are incapacitated, what happens?

How do the airlines prepare for a situation where for some reason both PIC and SIC are incapacitated for the remainder of the flight?
-5
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2answers
148 views

In what cases does an airplane return to airport? [closed]

I’m just wondering in what kind of emergency cases an airplane would return to the airport? I am a programmer and security enthusiast — what kind of security issue should I have to find that would ...
3
votes
1answer
172 views

Why aren't any jet fuels heavier than Jet A/A-1/JP-8 in common use?

The commonly-used jet fuels fall into two main categories: Straight kerosenes (Jet A, Jet A-1, JP-8, JP-5, plus, historically, JP-1), which are used in most situations because their high flashpoints ...
3
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2answers
211 views

Why don’t aircraft have interlocks to prevent high-lift devices from being retracted when doing so would stall the airplane?

Most aircraft have high-lift devices on the wings (such as flaps, slats, droops, whatevs) to allow them to take off and climb out at a reasonable speed instead of having to accelerate to near ...
27
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4answers
13k views

What should you do when ATC gives you a number to call to discuss a violation?

Generally speaking, for those that either have experience calling the number, or, preferably, for those that were paid to answer the phone, what are the benefits or pitfalls of calling? I had a ...
1
vote
1answer
257 views

Why aren't airliners spin-tested?

According to Wikipedia, only single-engine aircraft with an MTOW no greater than 12500 pounds are required to demonstrate the ability to recover from a spin, and not large or multi-engine aircraft. ...
5
votes
1answer
313 views

Why don’t aircraft use run-flat tyres?

Tyre failures on aircraft during takeoff are fairly common, and are usually (though not always) caused by flat or underinflated tyres (via the overdeflection and overheating experienced by tyres with ...
3
votes
0answers
129 views

Do aircraft manufacturers take steps to prevent pests like geckos from damaging the electronics?

Many Australians are suffering huge bills due to geckos getting into the circuit boards of their air conditioning units. Of course this is highly profitable for A/C manufacturers as they supply ...
0
votes
1answer
179 views

How to handle seeing someone online claiming to be a pilot or pilot in training, who one feels shouldn't be flying, in the EU?

Suppose that on some aviation-related Internet discussion forum, one comes across contributions from a user who claims to either be training for a pilot's license, or to have a pilot's license. ...
9
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7answers
11k views

Can rotorcraft pick up a dangerous electric charge?

So, I was re-watching The Hunt For Red October, (in light of current Russian shenanigans with Sweden), and there was a scene in which a crew-member on the ground was electrocuted by making contact (...
16
votes
1answer
8k views

Is there any limit on how narrow aisles can be?

Sometimes, when I'm flying on the airlines, I'll board an aircraft where the aisles seem incredibly cramped, where it's almost impossible to move past without bumping every seat. I can't imagine how ...
24
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4answers
9k views

Why is the seat belt mechanism on airplanes so different from the the one on cars?

You pull a flap on airplane seatbelts, you push a button on car seatbelts. Why?
32
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3answers
5k views

Why evacuate upwind?

Evacuation procedures after a forced landing recommend directing passengers upwind of the aircraft. What is the reason why evacuating upwind is better than other directions?
9
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3answers
2k views

What can passengers do if they realise their plane is not on the right path?

In the case of flight MH370, I think passengers on board would have long enough time to realise that something is wrong with their flight. I have a habit of carrying a compass with me when I travel ...
1
vote
2answers
614 views

Could flight MH370 have suffered decompression due to a high altitude bird strike? [closed]

MH370 was flying at 11 km altitude at a speed of 872 km/h. It is known that some birds can fly at this altitude, e.g. the Rüppell's vulture. So, could such a bird hitting the windscreen at roughly 900 ...
0
votes
2answers
246 views

How long before a Medivac should the pilots be ready?

If you are on home reserve how long is it required that the operator notify you of a flight before required Take off time? Is there a regulation or documentation to support this or is it operators ...
57
votes
4answers
100k views

How dangerous is flying in a single-engine plane?

Some people consider flying small planes very dangerous. Just how dangerous is it to fly in a light single-engine plane? For example, how does the fatality rate compare to driving a car, riding a ...
15
votes
3answers
26k views

Is flying during the day safer than flying at night?

Is there any correlation between night or day flight time and rate of accidents? To me it seems that there should not be a difference. If an airplane needs to execute an emergency landing, it has to ...
-11
votes
6answers
545 views

How much can I exceed crosswind limits by? [duplicate]

I'm learning in a Tomahawk. They have a maximum demonstrated crosswind component of 15 knots. My school has a limit of 12 kt, but will only allow students to fly in 50% of that, so 6 kt. Since it's ...
4
votes
2answers
3k views

Why does Qatar Airways fly over Syria and Iraq?

I saw on Flightradar that Qatar Airways still fly over Syria and Iraq. Why do they think that airspace is safe? I dont want to have to worry about my plane being shot out of the sky on my trip.
0
votes
1answer
112 views

Are Sophisticated Planes with Multiple Computer Interfacing Safer to Fly than Traditional Aircraft? [closed]

I passenger travel short haul flights to the carribean islands every month for business. I typically fly on an Embraer E190 or Airbus-320...I feel confident on the 190, I suppose I like the standard ...
16
votes
8answers
21k views

Why is tailwind during final approach and landing so dangerous?

I understand that tailwind is typically a good thing during your flight as it increases your ground speed and gets you to your destination faster. Despite that I get a feeling that pilots typically ...
4
votes
2answers
264 views

For a modern airliner, wings are tested to withstand 150% of the limit load. What kind of weather would produce turbulence at 100% limit load?

I often see people citing the wing flex tests, but with very little reference as to what kind of forces they're designing the plane to take. I am specifically referring to modern day jetliners such ...
8
votes
2answers
750 views

What are the properties of a good general aviation training aircraft?

I've been told that the best kinds of planes to train in are very small ones, like Cessna 150s and 152s. But I've never been clear as to why. I know they are cheaper to operate, so is operation cost ...
0
votes
3answers
344 views

How many Airbus planes have been destroyed in flight by severe turbulence? [closed]

Since a brand new A350 has literally the exact same design specifications / G limits as an airliner built in the fifties does (A 1955 F27 Fellowship will break up at 2.5 G-3.75G, same as a modern ...
-1
votes
2answers
382 views

How come the DC-8 plane can withstand +15G from turbulence, but newer planes can only withstand 20% of that amount?

Source - https://www.weather.gov/media/zhu/ZHU_Training_Page/turbulence_stuff/turbulence3/turbulence.pdf (Scroll down for photos) I figured out how many G's the cargo jet took by looking at the ...
4
votes
5answers
600 views

What measures prevent a military aircraft's weapons from being fired on the ground?

Recently the 20mm cannon of an F-16 was accidentally fired on the ground by maintenance personnel at Florennes Air Base in Belgium, resulting the the destruction of another F-16 and damage to a third. ...