Questions tagged [accident-investigation]

Use only when final reports are released or for the process of investigating accidents. Questions inviting speculation or opinions are off-topic.

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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 ...
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Is there a typical time on site during an investigation of a major accident?

An answer to the question Why does it take months, sometimes years, for the BEA and NTSB to complete aviation accident investigations? said, Visiting the Site - First there will be a team that ...
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Has any accident been prevented by bending or breaking the rules?

I wonder if there is an incident that pilots saved the plane or minimized the damage by bending or breaking the rules like Sully? (As it's known Sullenberger started the APU at first which was the ...
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Has color vision deficiency ever contributed to any incidents in aviation history?

I would like to know if there are any official reports pointing Color Vision Deficiency (CVD) as a major contributing cause of an air accident/incident. So far, I have only come across with FedEx ...
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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?
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Incident & Accident Investigation [duplicate]

Does the airports have there own incident/accident investigation depts? or they are restricted to the NCAA/Safety dept only?
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Do airports have their own incident/accident investigation departments?

Do airports have their own incident/accident investigation departments? or they are restricted to the NCAA/Safety department only?
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1answer
158 views

How is an air accident's probable cause determined?

I constantly hear that air accidents are caused by a range of shortcomings. However, most accident reports declare a main "probable cause". You can see below a bar-chart with the causes of fatal ...
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Why did the Boeing Max operated by Lion Air disintegrate upon crashing in the sea from a low altitude?

The Lion Air Max crashed in the Java sea from a low altitude. What is the structural integrity strength of the fuselage? I am curious to know the structural strength and integrity of commercial ...
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Can the debris pattern from a crash site confirm explosion as the cause of a crash?

Is there any precedent or can the debris pattern positively confirm the cause of a crash due to: an internal explosion OR strike from a missile or other military projectile? If a particular flight ...
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How do insurers apportion responsibility when airliners collide on runways or taxiways?

Here's an ATC recording of Virgin and Egyptair aircraft clipping wings at JFK. Generally, what happens next with regard to sorting out responsibility after a low-speed collision that results in ...
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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 ...
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What does Lion Air faking the repair of the AoA vane mean for the Florida repair shop that ceased operations?

This is a lengthy read, but worth it. I'll quote the main piece I am speaking of. At the Bali airport, a vane, known as an angle of attack sensor, was replaced. Crash investigators were presented ...
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What changes were made to the 777 as a result of British Airways 38?

Regarding the crash of British Airways Flight 38, a 777 inbound to Heathrow, the AAIB final report, section 2.8 states that frozen fuel deprived the engines of fuel pressure resulting in the crash. ...
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Would shutting down the engine have prevented the Atlantic Southeast Airlines Flight 2311 crash?

In the crash of Atlantic Southeast Airlines Flight 2311, a worn propeller quill caused the propeller blades to go flat, which created enough drag on that side of the airplane to make the aircraft ...
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1answer
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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 ...
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1answer
313 views

Did the First Officer of Ethiopian Flight 302 trim in the wrong direction? [closed]

Looking at the accident report of Ethiopian Airlines Flight 302, it says the cut out switches were used. But the manual trim moved from 2.3-2.1? My reasoning for asking this is because the timeframe ...
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Structural rating of aircraft to withstand storm induced structural stresses

I was watching an accident report where an aircraft crashes when a storm destroys a wing spar. I'm curious is this only a danger for small aircraft or are there ...
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Why does the autopilot disengage even when it does not receive pilot input?

After having read the disturbing https://en.wikipedia.org/wiki/1999_South_Dakota_Learjet_crash I'm left with the question as to why the computer allows for the autopilot to be disengaged when there ...
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Why was Pan Am Flight 103 flying over Lockerbie?

Pan Am Flight 103 was a flight from Frankfurt to Detroit with stops in London and New York. Why after taking off in London did it fly all the way to Lockerbie instead of going directly to New York? ...
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Is this one of the engines from the 9/11 aircraft?

I ran across an interesting set of post-9/11 photos and I noticed this picture in particular: The closest item on the truck looks a bit like an airplane engine, but I can't tell for sure. Is it one ...
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What is an “aeronautically qualified witness”?

Many older NTSB AARs, in their history-of-flight-and/or-accident-sequence sections, make mention of observations by an “aeronautically qualified witness” or witnesses, without any further explanation ...
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552 views

How much data is stored in the flight data recorder per hour in a typical flight of an A380?

One drawback or impediment to the storage of flight recorder data on the cloud is the amount of data that'd be transmitted and at cost. How much data in GB or TB is stored in the flight data recorder ...
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Is there a Cockpit Video Recorder?

Often we hear about Cockpit Voice Recorders, but are there video recorders?
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What does the preliminary report on the Ethiopian B737 MAX accident show? [closed]

In early April the Aircraft Accident Investigation Bureau of Ethiopia released a preliminary report on the crash of Ethiopian Airlines flight 302 that happened on March 10, 2019. There apparently is ...
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Is it normal ops to dispatch an airplane after a stick shaker was on throughout the previous flight (Lion Air 610)? [closed]

I've been studying Figures 5 and 7 of the Lion Air interim report and cannot understand why the airplane was dispatched on the "Loss-of-control" flight when the Left stick-shaker was on throughout the ...
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Smoking in the cockpit - how is this tracked?

A finding in the final report of US-Bangla Airlines Flight 211 crash is that the captain was smoking in the cockpit during the flight (page 46, section 3.1.2 e of the final report). My questions are: ...
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Which was the last Boeing crash that didn't send its black boxes back to the US?

I couldn't find an answer online, so I am asking the community. The real question is how frequent it is for a Boeing crash not to send the black boxes back to the USA, and a reply to title's question ...
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Is there less vertical space for an engine under the wing of a 737 Max than for an A320neo?

The source of this question is the understanding that the LEAP-1B couldn't fit under the wing of a 737 without changing its longitudinal position. But this wasn't the case with the design of the LEAP-...
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666 views

Why is Germany not able to read data from the Boeing 737 MAX black boxes?

It is my understanding that Germany stated it does not have the capacity to read the new software, declining Ethiopia's request: "The French announcement resolved uncertainty over the fate of the ...
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1answer
387 views

Why is Boeing being blamed for the recent 737 Max crashes? [closed]

Boeing has received more than 5,000 orders for the aircraft, it has delivered 350 so far and only 2 of them have crashed. That's not a very high crash rate. The FAA, until just a day ago, was very ...
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253 views

Could the autopilot have rectified the flight path without any crew input on the Aeroflot Flight 593?

In the case of the Aeroflot Flight 593 air crash, could the autopilot have rectified the flight path of the Airbus at any point if the crew had not attempted to correct the spin, even while partially ...
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How unusual is the 737 MAX 8's crash history?

The Boeing 737 MAX 8 is getting a lot of bad press at the moment, but people's instincts when it comes to probability are generally terrible, especially when it comes to risk assessment. Compared ...
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Why wasn't the Boeing 737 grounded in 1991 after a crash's cause remained unknown? [closed]

Why weren't 737-200s (and other variants): grounded immediately after UA 585 crashed, out of precaution and risk avoidance? The crash's cause was unknown then. remained grounded in 1992, after the ...
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Did factors specifically related to the concorde design influence the Air france flight 4590 crash?

This youtube video partially attributes the retirement of all concorde fleets to the airfrance flight 4590 crash: Were the factors in this accident due to the ...
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Was the 1992 Gimli DHC-4 Caribou accident ever investigated?

On August 27, 1992, 3 people were killed when a de Havilland Canada DHC-4 Caribou crashed immediately after takeoff at Gimli Industrial Park Airport. Wikipedia describes the accident as follows: ...
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1answer
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Which military aircraft does this seem to be? [F-16 vs MiG-21]

Can someone identify the aircraft based on the components, riveting style, or other technical details visible in these crash pictures? a) Based on publicly available details, the chief suspects are ...
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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 ...
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Who was the US military pilot who crashed his plane and was accused of selling it to the Russians?

There was recently news regarding a story of a former US military pilot who crash landed his plane somewhere in the southwest. He was accused of flying the airplane to Mexico to deliver it to the ...
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What's the exact moment were the spoilers are supposed to be deployed on a A320?

Are they deployed when the levers are pulled back to 'IDLE' or only when pulled back to 'Reverse'? I still can't figure out, 12 years after, why flight TAM JJ3054 crashed into a gas station and a ...
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Are there countries where not all plane crashes are investigated (even if deadly)?

background information I was struck by the news of this deadly plane crash on 20 Dec 2018 which claimed 8 lives and apparently is not investigated as the plane and its potential survivors were not ...
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Did AF447 cross dangerous weather?

question Did the Air France 447 pilots endanger the passengers by not diverting around but flying straight through the weather system encountered and pictured below ? Or was this a defendable, ...
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Where can I find official information about a recent crash in Mexico?

I have heard about a helicopter crash involving an Agusta A 109 in Mexico, that seems to be causing some turmoil due to the deaths of a newly-elected governor and her husband. Is there any info about ...
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Can computer imposed inputs be overridden on the Boeing 737-MAX?

During Lion Air Flight 610, a Boeing 737-MAX, it seems that the angle of attack sensors caused the software to believe the aircraft was stalling, thus initiating a nose-down pitch to recover from the (...
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How to find black boxes underwater absent any pinger signals?

If CVR/FDR cannot be seen visually on the seafloor (because covered by a thick layer of mud/sediments) and no pinger signals are detected, how can they be found? Metal detectors? Any other methods? ...
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How to refute this geometrical method to find MH370? [closed]

A geometrical method to find MH370 has been published on the Net (see images below). I am sure it is wrong (because if it were that easy, thousands of people would have had this idea back in 2014). ...
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What do “azimuth window” and “compass switch” refer to in this accident report?

I recently read the accident report on BEA 548, but I'm unsure of some technical terms used on p. 4 of the report (p. 14 of the linked PDF): Apart from the probability that in the particular ...
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Can the autopilot (or stall avoidance system?) of the B737 MAX 8 be overridden by sheer force?

A New York Times article from today about the Lion Air Flight 610 crash claims that in order to control the airplane the pilot could have braced his feet on the dashboard and yanked the yoke, or ...
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What has Airbus done to address the dual input issue?

There have been a couple of fatal incidents involving Airbus aircraft, namely Indonesia AirAsia Flight 8501 and Air France Flight 447, that could have been prevented had the captains orders / input ...
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Does the NTSB ever not follow up a preliminary report?

Two years ago, there was a fatal crash in Fredericksburg, VA in which 6 people died in a Beech 95-B55. For some reason, the story struck me, and I wrote a note to myself to follow up on it. The NTSB ...