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 happened to the engines on takeoff here (loud popping sound then silence) [closed]

What is the cause of the sound shortly after rotation in this short video? And does anyone know what flight this was and what happened? (i.e. incident report) as I can't find any news about a fatal ...
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-5 votes
3 answers
189 views

Were the Airbus A320 rudder hardover issues fixed after Indonesia AirAsia Flight 8501 crashed due to uncommanded rudder deflection?

Indonesia AirAsia Flight 8501 crashed when the rudder made an uncommanded deflection 2 degrees to the left: When the crew was required to fly the Airbus A320 manually, there was an unexplained nine-...
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3 votes
0 answers
165 views

Did Helios Flight 522 take off with its pressurisation mode selector in manual? [closed]

I'm currently doing a write up on the Helios Flight 522 disaster. Full disclosure, this is a journalistic piece, and I'm not an aviation expert. I'm many hours in at this point and most of it so far ...
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1 vote
1 answer
179 views

Kinetic energy to perforate skin/fuselage of aircraft

I know that most aircraft have skins that are either aluminum or an aluminum alloy variant. I'm trying to figure out the minimal amount of kinetic energy that would be required for a projectile to ...
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0 votes
2 answers
611 views

Could the pilots really not trim manually to overcome MCAS, as shown in the Netflix Downfall documentary?

In the recent Netflix documentary, a claim is made that once MCAS activated, after several activations, the pilots physically could not trim the aircraft due to the speed and pitch. Is this true? I ...
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2 votes
1 answer
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Why did the NTSB issue a full report for this accident?

The NTSB issued a full aircraft accident report https://libraryonline.erau.edu/online-full-text/ntsb/aircraft-accident-reports/AAR73-10.pdf for what seems to me to be a small general aviation crash. ...
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9 votes
2 answers
3k views

What caused this crash landing?

Watching this video, my attention was triggered by the quite firm right rudder deflection, just before the right wing stalls. There's no information about what ...
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10 votes
2 answers
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Did commercial air planes in 1972 really not have some sort of automatic distress call equipment?

I've recently watched the 1993 movie Alive, "based on" the real events of Uruguayan Air Force Flight 571. I don't know how accurate it was, but the basic idea is that the pilots did a ...
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2 votes
1 answer
332 views

Have there been any fatal accidents involving a transatlantic flight since AF447?

I'm trying to confirm there has been no commercial airline transatlantic flight accident (with fatalities) since AF447 in 2009. This would include any flight that crossed the Atlantic ocean, even if ...
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0 votes
2 answers
193 views

Airplane accidents that happen during take off and landing [closed]

I have just seen some documentary about Munich Air Disaster in 1958. I found that the real reason behind this disaster is related to the aircraft performance with the thick snow runway during take off....
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3 votes
1 answer
395 views

Why it was thought that 25% of the passengers could have survived the Crash in the Desert?

I read on Wikipedia: The Controlled Impact Demonstration (or colloquially the Crash In the Desert) was a joint project between NASA and the Federal Aviation Administration (FAA) that intentionally ...
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4 votes
1 answer
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Why did the Soviets not make radio contact with Korean 007?

I was reading recently about the shootdown of Korean 007 and it is clear that it was very tense times between the American and Soviet governments. The one point which struck me as weird throught the ...
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1 answer
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How do witness marks on propeller blades provide data on estimated blade angles at the time of impact?

In the NTSB Powerplant Group Chairman Factual Report for the 2014 crash of the King Air B200 in Wichita Kansas (NTSB# CEN15FA034), I read: "Neither propeller was feathered before impact. Both ...
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13 votes
1 answer
355 views

Has a passenger's consumer electronic device ever actually caused a crash?

Most of us are familiar with the standard warnings and regulations against passengers using electronic devices (at all during takeoff and landing, and in some cases throughout the flight). This is ...
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6 votes
2 answers
351 views

Have attitude indicators ever had triple failure in a commercial aircraft?

I'm wondering about couple of well known crashes (mainly AF447 and AirAsia 8501) and thinking: is there any case where triple redundant attitude sensor failure has ever occurred? In those accidents it ...
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0 votes
1 answer
164 views

How can a pilot involved in serious accident remain unknown?

Somewhat similar to this question. A short part from Wikipedia article about Emirates Flight 521 (emphasis mine): The captain was an unnamed 34-year-old UAE national who had been with Emirates since ...
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5 votes
3 answers
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Why are manufacturers assumed to be responsible in case of a crash?

I attended at a training concerning airborne software and the coach remarked that despite at the normal courts, when an aircraft crashes and the authority investigates, a manufacturer is guilty for ...
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1 answer
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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, ...
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1 vote
2 answers
167 views

What is MCAS' purpose? [duplicate]

In a recent question, one of the answers states: MCAS has nothing whatsoever to do with stall recovery or stall behaviour. It was implemented strictly to make the MAX's pitch stick force response in ...
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4 votes
1 answer
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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 ...
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1 vote
2 answers
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How far along was JFK Jr. in his instrument training?

I read up a little more about the infamous and tragic incident. JFK Jr. had over 300 hours logged, and about 36 in the Saratoga, half of which was solo. It's not like he was a newly minted VFR pilot ...
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3 votes
1 answer
282 views

What would happen if a hot air ballooon was punctured in mid-air?

I am writing a script for a film where a hot air balloon is punctured and it falls to the ground. There are two teenagers in the balloon when it is in the air. What I would like to know is how fast ...
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1 vote
0 answers
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What is the maximal delay between the publication of an investigation report recomending a study and the beginning of this study?

This question is focused on EASA regulations, mainly because the question arise when reading an investigation report written by the BEA. Investigation reports results in lots of recommendations to ...
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1 vote
2 answers
318 views

What caused the Belgian aircraft mechanic who stole an F-16 to crash? [closed]

This is the story, from the late 80s: https://apnews.com/3b2ba1c5735b3817a3e7ae3562780e9b Why did he crash? Why would anyone crash in this scenario? I'd like to ideally hear from someone who is ...
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0 votes
1 answer
119 views

ETH 409: Was the most obvious sign of fatigue being a factor due to one of the pilots calling out “go around” when they were climbing after T/O? [closed]

One of the pilots yelled out “go around” x6. It looks like they were making a right turn when they should have been making a left turn. The controller informed them for the second time to turn left, ...
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1 vote
2 answers
518 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 ...
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5 votes
1 answer
413 views

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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33 votes
6 answers
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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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11 votes
1 answer
584 views

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. Not only related to flying but also maintenance ...
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11 votes
2 answers
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?
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0 votes
0 answers
32 views

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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2 votes
2 answers
172 views

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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3 votes
1 answer
170 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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0 votes
1 answer
316 views

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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5 votes
5 answers
2k views

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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7 votes
1 answer
252 views

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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13 votes
3 answers
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 ...
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10 votes
2 answers
2k views

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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6 votes
1 answer
745 views

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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3 votes
2 answers
407 views

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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2 votes
1 answer
179 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 ...
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1 vote
1 answer
431 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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1 vote
1 answer
152 views

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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20 votes
5 answers
6k views

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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25 votes
2 answers
9k views

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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25 votes
5 answers
10k views

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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2 votes
1 answer
169 views

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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2 votes
1 answer
1k 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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10 votes
2 answers
561 views

Is there a Cockpit Video Recorder?

Often we hear about Cockpit Voice Recorders, but are there video recorders?
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2 votes
1 answer
278 views

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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