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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23
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3answers
2k views

Do (or can) pilots observe religious fasts when flying?

This question is about religious fasts like the Muslim Ramadan and others. Is there a civil aviation regulation about this? Must a pilot eat and drink by the regulations (or abstain from flying), or ...
7
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1answer
5k views

What qualifies as “overwater”?

I noticed that the saftey cards on a recent domestic US flight were the "overwater" version. Two questions about this: What qualifies as "overwater"? Is there an official (i.e., FAA) definition? Do ...
1
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1answer
186 views

Does the jet blast from a large aircraft pose any risk for other aircraft nearby?

We know that the jet blast of jetliners - A320, B737 and bigger - are dangerous for people passing by, airport vehicles and even small planes, and we must always maintain a huge distance to avoid ...
10
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5answers
1k views

How can cargo be jettisoned from a C-124 in flight?

I was reading about a C-124 that was carrying three nuclear weapons over the Atlantic, and developed engine trouble. The article said that two of the weapons were jettisoned into the ocean for safety ...
23
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3answers
3k views

Is it recommended to get a life raft for short overwater operations?

I'd like to fly to Santa Catalina Island (AVX) from the mainland around Los Angeles. There is a portion of this overwater flight where my Cessna 172 will be beyond gliding distance from land. I know ...
8
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1answer
1k views

Could a landing gear jettison mechanism be practical when ditching?

Reading this answer about GA aircraft ditching, I wondered if, considering conventional fixed landing gear aircraft (taildraggers) which often operate overwater, having the ability to jettison the ...
16
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5answers
2k views

Why don't both black boxes hold the same data?

As I understand, there are two black boxes on-board an aircraft. One black box, the Cockpit Voice Recorder holds the cockpit conversations and the other, the Flight Data Recorder holds essential ...
4
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1answer
219 views

How should ground crews act to safely extinguish an airliner's brake unit fire?

When the brake unit was overheated and had just begun to catch fire due to excessive braking because of long taxi distance upon arrival, the ground personnel (not firefighters) made the first ...
2
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3answers
433 views

Who activates the fasten seat belt warning on commercial flights?

Who activates (and de-activates) the "fasten seat belt" warning on commercial flights? I would guess it is either the pilot in command (normally the captain) or the first officer (co-pilot). If the ...
2
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1answer
257 views

Why isn't cabin air quality in airliners directly monitored with sensors?

Airliner air conditioning systems refresh the cabin air volume every couple of minutes. A portion of it is filtered and re-circulated into the cabin, however AFAIK there are no direct cabin air ...
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0answers
60 views

Why is crushable-block EMAS the only overrunning-aircraft-stopping system in wide civilian use?

Because runway overruns often end badly, and many runway ends (especially older ones) don’t have enough clear space available beyond the runway end for a full-size runway safety area (RSA), EMAS has ...
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2answers
213 views

What prevents the use of an EMAS along the sides of a runway?

The NTSB report about the crash of American Airlines Flight 1420 discusses whether an EMAS would have mitigated the severity of the accident, but concludes, based on testimony from a representative of ...
2
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0answers
126 views

Why do so few non-US runways have EMAS beds?

As occurrences of an aircraft running off the end of the runway and hitting things tend to leave both the aircraft and whatever it hits rather the worse for wear, much effort over the years has gone ...
24
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2answers
6k views

Is it true that cockpit doors are bulletproof?

I read about 9/11 and read somewhere that after 9/11 all aircraft cockpit doors were replaced with bulletproof ones. Is this true?
2
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0answers
36 views

Why does an A300/310 in LAND or GO-AROUND mode have to be at least 400 feet AGL for manual control column movement to disengage the autopilot?

Each of the A300/310’s two autopilots has two modes of operation: In CWS (Control-Wheel_Steering) mode, the autopilot(s) attempt to hold the attitude that the aircraft had at the moment of autopilot ...
23
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6answers
6k views

What is the difference between a flow and a checklist?

Use of checklists is a 'special emphasis area' during FAA private and commercial checkrides but there are a lot of comments in pilot forums about using flows instead, often - but not always - in the ...
12
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3answers
8k views

What's the right way to take a dog in a small plane?

I would like to take my friend and his dog for a flight. What's the safest way to take the dog? and what's a good way to protect the dog's hearing?
34
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7answers
9k views

How do pilots stay disciplined and use checklists, even after they have become routine?

I originally asked the same question on Space Exploration but will repeat it also here: Before every takeoff and every landing, there are several routine checks which need to be done in order to ...
49
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6answers
17k views

How dangerous was the turbulence on this commercial flight?

EDIT: Having read these great answers I feel a little ashamed for the fear I felt on this recent flight. However, judging by my reaction to the experience and the reaction of those around me on the ...
1
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0answers
115 views

Are there regulations about carrying cargo on passenger seats?

We see that passenger aircraft have recently made cargo flights so that the supply chain does not decrease due to the Covid-19 crisis. It is seen that the cargo boxes are loaded on the passenger ...
1
vote
1answer
138 views

Why don’t flying-boom tankers have collapsible/frangible/breakaway refuelling booms?

There are two main types of aerial-refuelling systems in use today: Probe-and-drogue systems reel out a hose behind the tanker, terminating with a soft conical canvas bucket; the pilot of the ...
1
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0answers
38 views

How big does an object in one of the ILS critical areas have to be to cause a problem?

ILS installations have a critical area extending some distance back from the glideslope antenna (primarily due to most glideslope transmitters’ needing to bounce one of their two beams off the ground ...
4
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2answers
991 views

When is Minimum Safe Altitude Warning triggered?

I know that Minimum safe altitude warning (MSAW) alerts ATC and pilots if an airplane is under the risk of controlled flight into terrain. But when is this alarm triggered? What is the minimum ...
35
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6answers
8k views

Why can't the A320's computer-imposed limits be overridden?

Under the investigation section of US Airways Flight 1549, it is noted that [The pilot] asserted that insufficient credit was given to the A320's fly-by-wire design, by which the pilot uses a side-...
26
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3answers
13k views

Why is this airplane flying in circles randomly?

This G650 has been flying around for over an hour now. Is this somebody with a mechanical problem who is burning fuel before returning to their airport of origin?
2
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1answer
269 views

How do acrobatic pilots avoid pulling too many G’s and passing out?

I just watched a video of a acrobatic pilot doing stunts, it involved a type of stall, not sure which one though. Long story short he overcompensated(?) which caused him to pass out, and then he ...
0
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1answer
24 views

Could any complications arise if the two FMCs are using different OPS programmes, i.e U10.7 and U10.8A? [closed]

B737-300 FMCs ARE OF SMITH INDUSTRIES 2907a4/10-6225-003
11
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3answers
3k views

What is the requirement of a higher glidepath/approach angle and is this a flight safety issue?

To reduce noise in the London urban area, Heathrow airport has announced plans to trial a steeper approach for aircraft landing - changing from 3 to 3.2 degrees. If this is successful, they will ...
0
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1answer
139 views

Why are non-essential passenger flights still being flown? [closed]

I'm not asking about essential passenger flights like for "like food, supplies, and flying medical workers. Oughtn't non-essential passenger flights have been shut down in North America, to curb the ...
14
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1answer
563 views

Is medical evacuation aircraft D-AIGZ “Robert Koch” protected against decompression?

In 2014, Lufthansa engineers converted a A340 into a medical evacuation aircraft specially equipped to carry contagious patients, e.g. with Ebola fever (D-AIGZ, "Robert Koch", msn 347). This aircraft ...
7
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1answer
6k views

In what circumstances do passengers or flight attendants have to take their shoes off?

Three shoes-related facts: A passenger and a flight attendant in this Аэрофлот/Aeroflot aircraft have their shoes off or are ready to take them off: It's suggested that shoes are taken off for ...
7
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3answers
649 views

Were my airplane's wheels under-inflated?

I recently took a flight on a (Lufthansa) Bombardier CRJ900 aircraft. As I was about to embark, my eyes caught this image: And the aircraft wasn't even loaded with the passengers yet. If I saw this ...
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2answers
225 views

Can a civilian helicopter regularly fly low & close to houses? [closed]

There is a helicopter which regularly (1 to 5Xs a month) at night or day flies very low & fast, has flown over a vehicle, playing a chasing game down neighbor's driveway and down the road. Who can ...
1
vote
2answers
216 views

What are some examples of pilot error with criminal negligence?

I’m having a hard time understanding why pilot error technically can’t be criminal negligence all the time? So I’m curious to find out some examples of this exact scenario, and how investigators ...
18
votes
4answers
35k 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 ...
41
votes
7answers
32k views

Do lights on aircraft flash in a specific pattern?

On a clear night, everyone can spot planes quite easily: they have flashing lights. I have noticed that the pattern seems different for different planes, and tried to find a meaning. What I saw so ...
4
votes
1answer
197 views

Do headrests considerably increase safety on aircraft?

When looking at newer GA aircraft, for example, Cessna 172s it is very obvious that the seat design has changed quite a lot over time. With the older ones having very short backrests and the newer ...
32
votes
9answers
6k views

What things can a passenger look out for, to indicate an emergency?

As a passenger with a keen interest in aviation, I'd like to think I'd be eagle-eyed enough to spot a problem that the pilots mightn't be able to see, from where they're sitting (for example, an ...
21
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4answers
9k views

Why can't aircraft be cleared to land before the preceding aircraft turns off the runway?

For example, let's say we have an Airbus A330 in front, which has just landed, well past the threshold and looks like it's going to be alright. Next in line to land is a small general aviation ...
3
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4answers
13k views

Under what conditions would a helicopter be allowed to fly at low altitude over populated areas?

Yesterday, the Department of Energy was flying a military helicopter at low altitudes over Boston and the surrounding area as part of an experiment of some type to measure radiation. I saw one of ...
18
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1answer
1k views

What happened with flight AC692 to St John's?

Yesterday, 2nd of March 2020, I was on board of Air Canada flight AC692 from Toronto (YYZ) to St. Johns (YYT). 40 minutes before landing, the plane turned around and flew back to Toronto. The flight ...
6
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1answer
1k views

Which fighter jet is the safest outside of combat?

I've heard that the Bloodhound SSC project decided to use a Eurofighter engine, because this was "safe". This got me wondering if there are any numbers on which fighter jets are safest. Something like ...
1
vote
1answer
113 views

Does the FAA have risk targets for specific activities?

Does the FAA have or publish goal values for various risks? I'm looking for something that says (e. g.) "We rate passenger airline flights as 'safe' if there are fewer than X casualties per million ...
0
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2answers
154 views

Airliner headlights flashing alternately [duplicate]

I live in Portland,Oregon. I watched a large jetliner coming into the airspace heading to the airport. The red,green and tail lights were normal. But the headlights were blinking alternately. I ...
17
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2answers
4k views

91 year old father allowed to fly a plane again?

My 91 year old father got his private pilots license over 60 years ago. He has not flown an airplane for 35 years and is saying that he can go buy his own airplane, again, and fly it tomorrow legally. ...
2
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3answers
305 views

Is it possible to use refrigeration technology to cool the skin of supersonic aircraft?

The fastest air breathing aircraft, the Blackbird SR71 flew at speeds above Mach 3. Its engines could achieve much higher speeds but were limited by the aircraft's skin which would melt due to ...
4
votes
1answer
237 views

Is it allowed to start engines during push-back?

Is it allowed, considered safe, and done, to start the engines while the aircraft is moving under the push-back power? On one hand it seems like a big time saving, on the other hand the running ...
0
votes
1answer
103 views

How can a person receive an expired life vest? [closed]

I wonder if passengers could receive an expired life vest because who else would they give to.
11
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2answers
2k views

Does the NTSB and other investigative agencies charge airlines for investigations?

Does an airline have to pay the investigation team? For example the NTSB? And if Boeing or Airbus participate in the investigation, do they also charge the airlines?
3
votes
1answer
541 views

What happens if an aircraft tries to land at MTOW (if greater than MLW)? [duplicate]

Here's a scenario: Just after Take-Off, there's an emergency on-board and pilot wants to land immediately. But, the weight of the plane wouldn't have decreased by large margins (usually 0.02*MTOW). ...

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