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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31
votes
3answers
8k views

How serious is an impact like the 10/2017 Delta Airlines suspected bird strike?

Recently, there was an incident where a Delta Airlines charter flight carrying the Oklahoma City Thunder basketball team was struck by an "unidentified object". Delta's official statement claims that ...
13
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3answers
2k views

Is there any obvious warning when auto-pilot is disengaged or when the mode changes?

Under the investigation section of the First Air Flight 6560 incident, it describes the catalyst for the accident: The approach was entirely flown on autopilot, which was correctly set to capture ...
4
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2answers
336 views

What conditions cause the gear-up warning to sound on a Bombardier DASH-8?

As the title says, what conditions cause the gear-up warning to sound on a Bombardier DASH-8?
2
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1answer
149 views

Why are the VHF and UHF airbands directly adjacent to frequency bands used by vital radionavigation aids?

Of the three main frequency ranges used by aircraft for radio communications (HF, VHF, and UHF), two (VHF and UHF) have their aircraft-radio-communications frequencies clumped together into a ...
6
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1answer
2k views

How do pilots clear an aircraft to fly through a hurricane?

This video shows a pilot (Tim Gallagher/NOAA) flying what looks like a small jet into the eye of hurricane Matthew by Miami. It's clear that it is quite an interesting ride. The (small) caption states ...
9
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8answers
6k views

Can a handgun shot take down a commercial airliner?

Most airplanes, when taking off or landing, are in range of small arms fire, i.e. your every day handgun. Is it possible to take down a commercial airliner by shooting at it with a handgun? Would one ...
7
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2answers
934 views

Why are the transition altitudes/levels different around the World?

I got tasked by my instructor pilot to find out why each country has a different transition altitudes / levels. For example in the US it's FL180 and in Saudi Arabia it's FL150. Can someone help me ...
0
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2answers
105 views

Is potentially dangerous to select the take-off power on airliner lower that temperature at the moment on the airport? [closed]

Is potentially dangerous to select the take-off power on airliner at lower settings value due to the temperature that could be increased by the time the aircraft will go up?
0
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1answer
59 views

Time of flying from Toronto to Philippines [closed]

Please I would Like to know how many hours I will be flying Across the ocean . I will be flying on an aircraft 773 boing 777.
3
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2answers
283 views

What needs to be considered when changing a tire during boarding/deboarding?

Passenger aircraft tires are physically inspected by the cockpit crew member or technician after each landing or before take-off, that the tire may have been cut or punctured as it may have hit ...
29
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5answers
16k 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 ...
17
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2answers
823 views

Who said “A little of all of us goes with every pilot we lose”?

The only attribution I’ve ever seen for the quotation below is “Anonymous FAA Inspector.” Whenever we talk about a pilot who has been killed in a flying accident, we should all keep one thing in ...
0
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1answer
244 views

Why do pilots wait for a positive rate to put the gear up, When V1 means “commit to takeoff”?

To explain further, V1 means they cannot stop in time if anything happens. Therefore they must commit to taking off. So why wait for a positive rate? Shouldn’t it be retracted as soon as they see a ...
4
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2answers
270 views

Are there any safety features to prevent reversible-pitch props from reversing in flight?

Some aircraft have propellers capable of reversing pitch, which is also known as beta angle. The example I saw was an Aviat Husky. (Youtube demonstration) I want to know if there are any safety ...
24
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8answers
8k views

Are there any real life instances of aircraft aborting a takeoff or landing to avoid a vehicle?

I came across a fake video of an A380 closely avoiding a fuel truck. More details at Snopes including a link to the YouTube video. While this video is not real, I'm interested in finding out if it's ...
13
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2answers
1k views

Have there ever been any accidents within holding stacks?

At a busy airport, up to a dozen aircraft waiting to land may fly the same holding pattern at the same time, separated vertically by 1,000ft. — a stack. Some ATC towers have dedicated Stack ...
41
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5answers
81k 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?
31
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3answers
8k views

Why was a flight delayed because of a bird in the cockpit?

This Washington Post article is about a Delta Airlines flight that took off after an initial delay, before turning back again shortly after, because of a bird that managed to stowaway in the cockpit. ...
22
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1answer
4k views

How short does a trip need to be before flying is less safe than other forms of transportation?

It's often mentioned that flying is the safest form of transportation, and no doubt this is true when considering only a long-haul trip. There's no doubt, for example, that driving (or taking a train ...
1
vote
1answer
148 views

How long is maximum time to investigate an airplane crash?

Lion Air flight 610 was crashed on 29 October 2018. It was Boeing 373 Max 8. Almost one year ago. I have not heard any news from National Transportation Safety Committee (NTSC) when they will release ...
4
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2answers
93 views

How can the effects of hot corrosion and salt deposits from sea water spray in gas turbine engines be negated/prevented?

In aircraft operating in a maritime environment, corrosive effects from salt water are common. Are there any specific coatings used in engines for such aircraft? If so, which are they? How frequently ...
13
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1answer
5k views

Why does Canada recommend a minimum rate of climb for ultralights of 300 ft/min?

What is a safe minimum rate of climb for ultralights? I understand most ultralights climb at least 300-800 ft/min and in fact the Canadian ultralight specs recommend a minimum rate of climb of 300 ft/...
10
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2answers
818 views

What if a aerobatic fighter pilot sneezes in middle of a maneuver?

No offense to any pilots, I am a student, curious. I just watched Spy (2015) and I was just wondering what happens if one of the pilot accidentally sneezes during a difficult maneuver. Jude Law ...
9
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2answers
2k views

How often does fan blade out happen?

Jet engines are designed to contain a fan blade failure, and the engines and airplanes are designed with this type of failure in mind. This is more critical in the modern high-bypass designs with ...
10
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3answers
996 views

What is the longest period of time an aircraft type has been grounded due to safety concerns?

Obviously inspired by the current 737 Max situation, what is the longest period of time that any individual type of airliner has been grounded for safety concerns (excluding those that never returned ...
7
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4answers
336 views

What accidents have had crew accustomization to warnings among their causes?

A non-answer on this question claimed that: the idea that maneuvering with the stall warning activated will somehow damage us, causing us to ignore its warning when the chips are down and AOA is up,...
8
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4answers
1k views

Which altitudes are safest for VFR? [closed]

As a fairly new pilot who does a fair amount of x-country flying I find myself "feeling" safer going East at 5500 and West at 6500 happily burning extra fuel to get up there. Listening to the on route ...
12
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1answer
2k views

What are the regulations involved in aerial advertising?

I often see small aircraft flying at a low altitude around beaches and the like with banner advertisements trailing behind them on a rope sort of structure. I have a few questions about them: What ...
10
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3answers
2k views

Why did this 737 not take off on first attempt?

This video shows a 737 'near miss' takeoff. I'm curious as to why the aircraft did not take off as expected, i.e. is there anything obvious from the video? I'm ...
1
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3answers
500 views

Is it safe to fly with a B737-800? Is it different from a B737 Max 8? [duplicate]

I'm flying from Costa Rica to Chile in November with a B737-800 plane. I'm wondering if this is a different aircraft than the B737 Max 8 or if it's the same?
12
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2answers
476 views

What are the ejection injury and fatality rates?

Most of us have probably heard about how ejecting from a military aircraft is dangerous in and of itself, and that ejection is not a get out of jail free card. The most common dangers seem to be: ...
0
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0answers
81 views

Why does not jet engines have a metal grid in the front? [duplicate]

An aircraft engine can get destroyed if a large object - like birds - enters it while running. I'm probably naive, but this seems pretty easy to solve. Why not just have some kind of metal grid in ...
8
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1answer
3k views

Can passengers use headphones during takeoff and landing?

On a recent flight from KBP to KIV operated by Ukraine International Airlines (aircraft B737-800) I was asked by the flight attendant to remove my headphones both during takeoff and landing. Is ...
50
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3answers
10k views

How dissimilar are redundant flight control computers?

Facts On Airbus aircraft there are computers to secure the flight envelope, or to move the control surfaces. FADECs totally control the engines. Computers take decisions in place of the pilots, or ...
2
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3answers
951 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 ...
5
votes
1answer
233 views

Why do they tell you to tie your lifevest on the left side during safety briefings?

This might be UK specific, given I have only been flying internally recently. During the safety briefings, when describing how to inflate the lifevest the instructions are always: "Wrap the lines ...
3
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0answers
111 views

How fast is it safe to eject from an F-16? [duplicate]

What is the limit of the ACES II for the F-16, in terms of altitude and airspeed for safe ejection? The following video tells the story of an F-15 pilot who ejected at supersonic speed and barely ...
13
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2answers
1k views

Was there a design flaw in the fuel tanks of the MiG-15/17/19/21?

Wikipedia article on MiG-15: Another major design deficit was that the tank could develop under-pressure if more than half the fuel had been used, which could easily lead to tank implosions, ...
5
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1answer
529 views

Is this WWI movie scene realistic?

In a poignant scene of 1933 WWI film The Eagle and the Hawk (not to be confused with the same-name 1950 western film), while the pilot played by Fredric March performs a loop-the-loop in his – I ...
4
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1answer
207 views

Why do some U.S. airlines require passenger headrests to be lowered during takeoff?

I've experienced a few times recently where cabin crew have asked passengers to lower their adjustable headrests during takeoff and landing and, in at least one case, it was even part of the pre-...
0
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0answers
38 views

Are the Australian NASF guidelines based on ICAO standards?

Here in Australia we have a set of regulations called the "National Airports Safeguarding Framework" (NASF); these consist of 9 federally imposed guidelines for: Measures for Managing Impacts of ...
3
votes
1answer
251 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 ...
2
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0answers
120 views

Aeroplane protection against lightning strikes [duplicate]

I would like to know what kind of protection are available on planes against lightning strikes.
21
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7answers
8k views

Can two aircraft be allowed to stay on the same runway at the same time?

My understanding is that the runway should always be cleared, and occupied by no more than a single aircraft for takeoff and/or landing at any given time. Is there any scenario in which ATC can ...
6
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1answer
1k views

Was John F. Kennedy Jr.’s accident airplane equipped with an autopilot?

JFK Jr.’s crash was attributed to failure to maintain control due to spatial disorientation. Could this be explained by his Piper Saratoga N9253N having no autopilot?
7
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3answers
687 views

Do some flying techniques wear aircraft out quicker than others?

In the 2012 film Flight, the cause of the mechanical failure is a sort of worm-screw that controls the rear tailplane. And I believe that in real life failures in those devices have been implicated in ...
2
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1answer
2k views

What is the requirement for fire fighting equipment on board a passenger flight?

What is the legal requirement regarding fire fighting equipment on a passenger flight, e.g. fire extinguishers and fire hoods? I imagine that the number is proportional to the airplane's max capacity. ...
4
votes
4answers
227 views

For calculating $V_{stall}$, why should be used $C_{L,max}$ and not $C_{L,min}$ (that would be more prudent)?

Premise: In level unaccelerated flight we have relation $W=L=\frac{1}{2}\cdot\rho\cdot V_{stall}^2\cdot S\cdot C_{L,max}$ (taken from book Daniel P Raymer "Aircraft Design: A Conceptual Approach" ...
1
vote
1answer
74 views

What is the most critical data to measure for a predictive maintenance model for a drone? [closed]

I'm looking at making a predictive maintenance model for a drone (quadcopter mainly but can include others) I'm wondering what is the most common causes of failure due to "overflying". (not including ...
11
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4answers
2k views

Can we eliminate the center tank of large passenger planes?

This is a safety question about fuel and fires. This all regards commercial aviation for large passenger planes. Most fuel is stored in the wings, but in the largest planes, there's also a center ...

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