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Questions tagged [safety]

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

7
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3answers
4k views

Why didn’t the Captain of Cathay Pacific flight 780 shut down engine 1 and land with a more reasonable speed?

In the approach phase, engine 1 of Cathay Pacific flight 780 got stuck at about 70% N1 and it forced the crew to do an overspeed landing (230knots). Why didn't they shut it off by turning the fuel ...
2
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2answers
146 views

Do any aircraft automatically test that the pitot-static system is functioning properly before liftoff?

Given that a properly-functioning pitot-static system is absolutely essential for flight (a plane cannot be flown without valid airspeed data, or at least not for long), are there aircraft that ...
5
votes
1answer
479 views

Why is the GP7200-powered A380 fleet not grounded?

After the Qantas A380 engine failure, all Trent-powered A380s were grounded.1 After the Air France A380 engine failure, the GP7200-powered A380 fleet was not grounded. Why were these two incidents ...
1
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0answers
56 views

Could I Legally Fly a Paramotor as a Commuter Method [duplicate]

I get permission from company security to fly into work using my paramotor (I don’t have one, but would like to get one). We have six offices around the city. The city has two airports: one major ...
1
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1answer
83 views

How do aircraft stall warning systems handle (or not) asymmetric-stall situations?

Most, if not all, new airplanes are required to have stall warning systems to (as the name should make clear) provide the pilots with a warning when the airplane is about to stall. Most stall warning ...
30
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6answers
12k views

Why do we say certain things *three times*, e.g., “Mayday. Mayday. Mayday”?

Repetition is a key characteristic of communication in the control tower, cockpit, and control room. Some phrases, like "Mayday" get repeated. The speaker says the same thing three times. We know ...
1
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2answers
97 views

What margin of error should one reasonably allow regarding aircraft performance?

This question generated a lot of discussion around amateur pilots often making the mistake of calculating aircraft performance based on perfect conditions and not allowing for a 'safety factor' (i.e. ...
0
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1answer
176 views

How to increase your chances of survival in a plane crash? [closed]

More than 90% of plane crashes in recent years had survivors. In America, for example, there were 568 plane crashes between 1983 - 2000: Out of the collective 53487 people onboard, 51207 ...
2
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2answers
225 views

Why aren't runway numbers painted in a higher aspect ratio?

I'm watching a lot of aviation youtube channels and it seems to me that when attempting a landing on a "normal" glide path, it must be quite hard to read the runway numbers until you're on short final,...
0
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0answers
27 views

Oversight responsibility in the delegated airspace

Who retains the oversight authority in the delegated airspace when an airspace of one State is delegated to another State fir the provision of Air traffic Services?
6
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2answers
431 views

To what extent have political (race, gender, social class) attitudes been implicated as human factors in the cockpit?

This question is based on https://aviation.stackexchange.com/questions/27814/ and related to: How does cultural difference impinge upon human factors in aviation industry safety? How have deep-seated ...
12
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3answers
2k views

Why did my business class seat have a three point shoulder harness?

I recently rode a short haul international flight on Asiana Airlines AAR111 from KIX to ICN. I was surprised that my business class seat had a three-point shoulder harness given that we’ve discussed ...
8
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2answers
1k views

Why are passengers not given the option of shoulder harnesses?

From this question: In airliners, shoulder harnesses are not installed for passengers because: it is not mandated by law it is too much for average passengers to deal with it requires ...
0
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3answers
654 views

Why is this video of a G36 Bonanza taking off so scary?

Why is this video of a G36 Bonanza so 'scary'? If they had clipped the top of the trees, would it really have brought the plane down? (And even if yes, it looks pretty ...
0
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0answers
106 views

Why don’t most aircraft have emergency braking parachutes? [duplicate]

Braking parachutes were standard on first-generation jetliners, but have since fallen almost entirely out of use except on military aircraft; essentially the only civilian aircraft nowadays to still ...
1
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2answers
187 views

Why aren’t multiengine general-aviation aircraft required to be capable of sustained single-engine flight?

While perusing the See How it Flies website, I came across this alarming statement regarding multiengine general-aviation aircraft: You must not allow yourself to think that just because airliners ...
1
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1answer
134 views

Why do pilots typically start out in piston-engined aircraft, rather than jets or turboprops? [duplicate]

Essentially all pilots begin flying with propeller aircraft powered by piston engines, rather than in turboprops or light jets, even though: Operating a piston engine requires adjusting the mixture ...
15
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1answer
296 views

What makes it safe for the DC-8 to use reverse thrust in flight?

For most jets, the use of reverse thrust to slow down in flight, where even possible, is extremely dangerous, and strictly prohibited. Not so on the DC-8, which is certified for the safe in-flight ...
22
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7answers
13k views

Where is the safest seat in the plane?

If I'm going on holiday with my family on an airliner such as one of the ones listed on this page, then where is the safest place to sit? The answers to this question seem to imply that the seats at ...
10
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1answer
850 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
84 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 ...
1
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3answers
168 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 ?
0
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1answer
98 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
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1answer
304 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
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2answers
5k 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 ...
9
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2answers
4k 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
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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
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0answers
92 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 ...
25
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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 ...
31
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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
76 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
46k 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 ...
3
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2answers
239 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 ...
4
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1answer
173 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
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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
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1answer
2k 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
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0answers
50 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
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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
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2answers
895 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
296 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
236 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?
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2answers
137 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
134 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
157 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 ...
26
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4answers
11k 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 ...
36
votes
5answers
70k views

How much is the minimum safe distance between two planes in-flight?

According to FAA regulations, how far should a commercial jet be away from another plane in-flight? How about military planes? They get really close when in formations... Is there a minimum distance?
1
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1answer
193 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. ...
3
votes
1answer
226 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 ...