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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11
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6answers
1k 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 ...
23
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4answers
7k views

Is it a flight violation to mishear ATC instructions for exiting the runway?

I was on landing rollout and misheard a tower "turn off at xxx switch ground" call. We read back the incorrect taxi way and turned off there and switched to the ground frequency. After our incorrect ...
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2answers
217 views

Reason why heavy aircraft are allowed to land but not to start

I stumbled upon this article (German) It says that a few of Lufthansas 747 are grounded at Twente airport. They were parked there because of COVID-19 at an aircraft recycling company. Now the airport ...
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4answers
3k views

Was this Gulfstream way below the glideslope?

I saw this YouTube video about a Gulfstream jet that came into landing on Princess Juliana International airport and the landing does not seem to be by the book at all. It seems like the landing gear ...
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0answers
28 views

What are the safety events definitons for Flight Operations Quality Assurance (FOQA)?

I am searching the definition and parameters of safety events which are used in Flight Operations Quality Assurance (FOQA). I tried searching by myself but I can't find anything valuable. Are this ...
18
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2answers
5k views

What improvements did Airbus make as a result of the Air France 447 accident?

As far as I can tell, the following factors all contributed to this crash: Pitot tubes susceptible to ice crystal blockage Crew not aware that they can stall the airplane due to alternate law No ...
0
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1answer
96 views

Are there any characteristics of a hypoxic flight? [closed]

Any patterns that investigators look for? For example, what happens when the engine flames out? is it guaranteed to enter a high speed dive? And would this affect certain parts of the aircraft, ...
4
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0answers
68 views

Is there a standard for required repainting of worn runway markings? In USA

Is there an FAA regulation or advisory circular covering the allowable wear, fading, or weathering of runway markings? I can find many FAA standards for the paint of fresh new runway markings, but I ...
2
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1answer
139 views

I have an idea about how to resolve a conflict between the pilots and an automated flight control system. Does it make sense? [closed]

I am thinking about the 737-MAX crashes. There is a similar question at Is it common for automated control systems to use non-redundant sensors? There was an article in yesterday's Seattle Times In ...
5
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1answer
177 views

Is it normal that an ELT activates during a strong up draft in flight?

I was flying a PA 28 181 Archer on a nice clear day at cruise speed level flight 3000ft. Suddenly, from nowhere it was hit by an up draft that lasted I would say less than a second. I got pain in my ...
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2answers
124 views

What is the best time to run runway friction tests? [closed]

When is the best time to run runway friction tests? And what is the optimum temperature to run them?
30
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3answers
4k 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? ...
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3answers
306 views

Do pilots of commercial aircraft have ready access to a map or data showing nearest airports in case of a need to make an emergency landing?

As a passenger I often wonder that if a pilot had to make an emergency landing, do they have access to live information to direct them to the nearest airport or is this something that they have to ...
11
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4answers
3k views

Isn't it dangerous for a soldier to sit on the outside of a flying helicopter?

AH-64 during an extraction exercise at Camp Bondsteel, Kosovo in 2007 with a soldier on the avionics bay. I lit upon this image on Wikipedia. I see that the soldier is harnessed fastened to the ...
4
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1answer
370 views

Is there a reason that commercial jets do not have a “dead man’s switch”?

Following high-profile cases of disappearances such as MH370, as well as the lower-profile but no doubt common radar infringement and level / airspace busts that we don’t hear about often, is there a ...
15
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6answers
9k views

What is the commercial passenger aircraft top speed record?

Aircraft manufacturers claim that commercial passenger aircrafts cruise at the speed of 400-500 knots. But, is the top speed of a commercial passenger aircraft recorded (while in air)? If so, what is ...
16
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4answers
2k views

Did DB Cooper's aircraft land safely with the aft stairs open?

I've never seen a 727's aft stairs open, but presumably, based on an Wikipedia image and common sense, they do reach the ground when the aircraft is on the ground. Furthermore, (as I understand it), ...
12
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3answers
3k views

What is a 'Wing Loop Fault' on an A320 series Aircraft?

I was recently involved in a flight that had issues before take off. The plane was an Airbus 321. It was explained to me as being a "wing loop fault". The problem was that the ECAM messages were ...
0
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2answers
112 views

What is the name of Control equipment? [closed]

I wanted to know the name of equipment that controls the control surfaces of an aircraft by taking commands from the pilot through it's hotas stick. The aircraft could be a combat 50's or 60's a/c, so ...
23
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3answers
8k views

How is it safe for helicopters and Ospreys to refuel in mid-air?

How do military helicopters like the Blackhawk and CH-53, as well as the V-22 Osprey, perform mid-air refueling without their rotor blades (periodically and accidentally) contacting the drogue or fuel ...
5
votes
1answer
193 views

What were the historical safety statistics of airplanes?

There's lots of debates in the Space world about the safety margins of modern rockets (specifically the fact that the ITS isn't planned to have an abort mode as (in the words of many SpaceX supporters)...
3
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0answers
105 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 ...
11
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3answers
855 views

Has there ever been an uncommanded lowering of landing gear?

Has there ever been an uncommanded lowering of the landing gear on a large commercial jet? I could not find any instance of it in a preliminary google search. Could a simple short-circuit cause such a ...
14
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1answer
5k views

What if you refuse to fasten your seatbelt?

As a passenger, what happens / can happen if you refuse to fasten your seatbelt when you are told to, either during take off/landing or (bad) turbulences? I've recently read a Facebook post that ...
-5
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1answer
98 views

How will LiFi application in an aircraft change the security of an air travel? [closed]

In a near future, LiFi technology will replace WiFi in a commercial aircraft. LiFi will make nonstop internet service possible. This will generate some new issues in air travel security. Especially ...
5
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1answer
508 views

Who must approve a globally distributed satellite to ground laser communication system? [closed]

Laser Light Communications (US) plan for several dozen optical high speed data links between satellites and ground is described in Aviation Week's article Big Gains On Horizon For Laser Communications ...
0
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0answers
37 views

Commercial aircraft can withstand up to 3.8 (sustained) G's. Can an airliner withstand more G's if the G forces are momentary (ie Turbulence)? [duplicate]

If yes, how many (momentary) G's found in turbulence could an airliner withstand? Since the G rating comes from static/sustained G's, rather than turbulence G forces which are momentary/not sustained.
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0answers
130 views

Can a modern airliner handle turbulence forces of +5/-3G?

In the BOAC Flight 911 accident the 707 likely experienced around positive 5G and negative 2-3G. The wings of the 707 were only about as 50% as flexible as the wings of airliners today. How would a ...
0
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0answers
43 views

Do modern airliners have a higher Gust Load Limit than an older airliner of the 50's or 60's?

I ask this because the BAC 1-11 had a Gust Load Limit of ~66 fps, and it had a structural failure in a thunderstorm. Many websites say aircraft design has improved since then, so has the Gust Load ...
3
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3answers
488 views

How safe are extreme aerobatic flights?

Statistically, how safe are extreme aerobatics flights like this one?
26
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1answer
5k views

Are there any drawbacks to requesting progressive taxi every time?

Unless you know the airport like your own backyard, it seems like requesting progressive taxi would always be the safest option to essentially eliminate the possibility of taking a wrong turn or ...
66
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2answers
6k views

Are the instrument panels in the cockpit spill / waterproof?

There are multiple switches and buttons in the cockpit, with different shapes and layouts. Are they spill proof? What if the pilot spills water or coffee on them, will they still function?
8
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4answers
587 views

Why aren't angle-of-attack data sanity-checked before being fed to other aircraft systems?

For most fixed-wing aircraft, accurate angle-of-attack information is utterly essential for safe flight, due primarily to the risk of stalling the aircraft if the AoA of one or both of its wings ...
18
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3answers
3k views

Why is not every airplane equipped with 3 angle-of-attack sensors?

For critical systems, redundancy is built into the system. It is common knowledge among designers/architects to have three different inputs so in case one is faulty, input from the remaining two can ...
51
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3answers
12k views

The F-16s that were scrambled to intercept United 93 did not have time to arm the jets, so the pilots were going to “ram it” how does that work?

The Wikipedia page says Two F-16 fighter pilots from the 121st Fighter Squadron of the D.C. Air National Guard, Marc Sasseville and Heather "Lucky" Penney, were scrambled and ordered to ...
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2answers
2k 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 ...
16
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2answers
2k views

Have any airliners successfully landed on a runway after striking a tree?

There are many examples of aircraft striking trees during a crash sequence, usually with high fatality rates. Have any airliners struck* one or more trees and proceeded to successfully land on a ...
3
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3answers
260 views

Shouldn't the instructor in this scenario try to avoid a deadstick landing? [closed]

In the Netflix drama "The Crown" (season 1, episode 4) Prince Philip has flight lessons with Group Captain Townsend (below is an image of that scene, I was unable to identify the plane). ...
2
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1answer
147 views

What is a “Standard visual inspection”?

Passengers injured as US fighter jet comes close to Iranian plane The Iranian plane, belonging to Mahan Air, was heading from Tehran to Beirut on Thursday when the pilot staged a safety manoeuver, in ...
10
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3answers
6k views

Are there any data on the safety rate of gliders vs single-engine GA aircraft?

Can anyone point me to statistics on the safety record of gliders vs. single engine general aviation aircraft?
0
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0answers
35 views

Is there a standard EASA checklist for auditing Part-145 organizations?

Which document is the reference for preparing an audit checklist for auditing an approved Part-145 organization?
1
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1answer
75 views

What safety precautions are taken for an airline prototype test flight?

Regarding the software, the equipment and the personnel. Can the crew jump out of the plane with parachutes or is it a bad idea? Additionally, if you would compare the safety of today and the 1970/80s ...
2
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2answers
140 views

Can I safely plug something that draws 6 amps into the cigar lighter (power port) in my Piper Archer lll?

Can I safely plug something that draws 6 amps into the cigar lighter (power port) in my Piper Archer lll ?
2
votes
4answers
432 views

Can an airline lay off its flight attendants and use pilots to fill the role?

IcelandAir recently announced that it will be laying off its entire flight attendant staff, and plans to have pilots fill the role in the meantime. Can an airline lay off its flight attendants and ...
0
votes
1answer
167 views

Why haven't airlines added safety pads to their carts? [closed]

I chanced upon this question at 5:11 of this YouTube video. Their answer is "no idea". A cynic would answer profit motive, for it costs money to add safety pads to all these carts and ...
6
votes
1answer
381 views

How safe are commercial airliners from gallium infiltration?

I recently saw a video on gallium infiltration on YouTube. Gallium is a metal with a melting point somewhere between standard room temperature and human body temperature, meaning if you pick up a ...
19
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5answers
5k views

Are planes allowed to fly in circles, and is there a minimum legal altitude for takeoff and landing?

I live near a small, possibly private, airport. Every day there are small planes flying low over the neighborhood in circles for over half an hour. They appear to just be flying for recreational ...
1
vote
1answer
303 views

Can Airbus A320 doors be opened mid-flight?

Today I learned how airliner doors are typically an outward facing plug and cabin pressure would make them nearly impossible to open mid-flight. It's easy enough to see that for the shape of Boeing ...
48
votes
3answers
27k views

What is the technique or procedure to disable/disengage the MCAS on Boeing 737 Max 8 & 9 Aircraft? [closed]

With regard to the recent crashes involving the Boeing 737 Max 8 aircraft, where according to preliminary reports, it appears to be related to the MCAS, which is a safety system that pushes the nose ...
0
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0answers
29 views

Comparing Argus, Wyvern, and IS-BAO

I'm interested in how Part 135 operators pilots, ops directors, etc., view the Argus, Wyvern, and IS-BAO ratings - and how you view the differences in tiers - Platinum, Gold +, Gold, Wingman, ...

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