Questions tagged [flight-data-recorder]

A flight data recorder, or FDR, is one of two flight recorders ("black boxes"), used to record pilot input and aircraft parameters for the purpose of investigation of accidents and incidents.

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29
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3answers
5k views

When are black boxes used?

Obviously, black boxes gather lots of media attention after tragic accidents where planes crash or explode mid-flight, since they could be crucial understanding the crash. However, these are rather ...
28
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6answers
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Why are FDR's called "black boxes" when they are actually orange?

Why do they call flight data recorders a "black box" if it's orange in color? Just curious about this since I've seen several images of black boxes but they all come in orange colors, and not black. ...
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Why is the FDR and CVR put into water again after a water crash?

When a plane crashes in the water and the investigator team looks for the FDR and CVR, why do they put it in a container of water when they find it ?
25
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2answers
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Is flight data recorder erased after every flight?

Flight data recorders store massive amounts of data per flight and despite improvements year on year with data storage as with Moore's law, carrying larger and larger amounts of data can become ...
23
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3answers
2k views

Why are FDRs and CVRs still two separate physical devices?

Given the histories of flight data recorders and cockpit voice recorders, I somewhat understand their origins as two separate physical devices. Given their separate tracks of development, regulatory ...
23
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1answer
6k views

Do aircraft manufacturers produce their own black boxes?

Do the manufacturers who build airplanes use their own "black boxes" in the planes, or are there companies whose sole purpose is to develop black boxes? For example, in 2010 in the Airblue Flight 202 ...
18
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6answers
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Why don't black boxes have their own GPS?

In too many cases of unfortunate incidents, hunting for FDR (or CVR also) is a major challenge.1 There are many or all answers recorded on that device. Why a locator (GPS linked) cannot be included ...
18
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1answer
5k views

Can flight data recorders be hacked?

In the event of a plane crash such as MH17, and the flight data recorders (FDR, a.k.a. "black boxes") are potentially in the "wrong hands", is it theoretically possible to: open the FDR and close it ...
18
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1answer
949 views

Who legally owns the Flight Data Recorder?

Who legally owns the Flight Data Recorder after an aircrash? Who is responsible for retrieving it and/or allowed to retrieve it? And how is it decided who carries out the crash investigation?
15
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4answers
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Why don't airlines have in-flight video recordings like buses do?

That way we could study plane crashes more closely, or terrorist hijackings, or resolve passenger disputes. Even buses in Ecuador have video cameras.(WARNING: shocking video)
15
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2answers
2k views

Does the FDR record data about the cockpit door lock system?

Does the flight data recorder record whether the cockpit door lock was deliberately used to lock someone out?
15
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4answers
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How close do you have to be to an underwater black box to detect it?

The news keeps talking about the black boxes on aircraft that end up in water, and one thing that keeps coming up is the underwater locator beacon that transmits a signal for 30 days if it gets wet. ...
14
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2answers
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Do fighters have black boxes?

Or is it just commercial aircraft? I was watching an episode of Scorpion where an "F-120 Firehawk" crashed and they looked at its black box. So, do normal, non-imaginary fighters have them?
12
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1answer
480 views

Why was the FDR of flight ET409 extracted from ocean transported dry instead of in water?

I was more than sure that FDR (as good as any other electronic device including magnetic strip, i.e. HDD), after sitting for a few days under the sea or ocean, must unconditionally be transported wet (...
11
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3answers
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How does a CVR / FDR determine when to stop recording?

For example, the CVR records only about 2 hours of data. Overwriting important data must be avoided, and thus the recorders should know if a catastrophe has happened. Then they can stop recording (to ...
11
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3answers
2k views

Is there anywhere I can pick up raw flight data recorder information?

We were plotting flightpaths as practice in programming class but unfortunately that was limited to some recordings from a research aircraft. I'm wondering if I can pick up the raw data files from (...
11
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1answer
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Are CVR and FDR reset after every flight?

Recording the thousands of parameters and voice conversations must take a huge amount of storage, and so I am wondering, how frequently is this data "deleted", so it can be used again? For example, ...
10
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2answers
934 views

What are the data elements shown on the GE235 flight data recorder (FDR) plot?

The Aviation Herald already has an image of the Flight Data Recorder information from the crash of TransAsia GE235: (click to enlarge) I have determined that the green lines are for engine 1 and the ...
9
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2answers
931 views

How is data transmitted to CVR and FDR?

A recent news item mentioned that "black boxes" are typically stored in the tail section of an aircraft to maximize their odds of surviving a catastrophic incident. If they're stored in the rear of ...
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2answers
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Are military aircraft required to have black boxes?

In the United States, the FAA requires certain types of aircraft to have a Flight Data Recorder (FDR) and/or Cockpit Voice Recorder (CVR). I understand these regulations to apply mostly to civil ...
8
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1answer
3k views

What is the format of data stored by a Flight Data Recorder?

Is the raw data fetched from the FDR available only in binary format and if so what are the software tools that are used to convert it to readable format?
8
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1answer
329 views

Was the foil in older FDRs reused when it ran out, or replaced?

Before magnetic tape became the standard recording medium for flight data recorders, most FDRs used a long strip of metal foil that had altitude, airspeed, etc. traces scratched into it by a set of ...
8
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3answers
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How much data do FDR and CVR generate on commercial jets?

I'm wondering about how much CVR and FDR data an A320 (for example) would produce and at what intervals. I believe that there are 4 or 5 voice channel and several sensor data things. I'm trying to ...
8
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1answer
728 views

If an aircraft does not have an FDR, must one be installed to comply with Flight Data Monitoring requirements in EASA countries?

Flight Data Monitoring (FDM), which analyzes FDR data to accomplish things like ensuring that pilots are following SOP's, is a requirement for EASA's Third Country Operators (TCO) certification, ...
7
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1answer
502 views

What was the first aircraft fitted with both an FDR & CVR?

What was the first production aircraft to be fitted with a Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR) as standard by the manufacturer?
7
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3answers
624 views

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? ...
6
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1answer
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What is the relation between roll angle and pitch angle?

I was wondering about roll angle and pitch angle values. Will I get same pitch angle at different roll angles and vice-versa? For example. At its initial position, the aircraft is standing on the ...
6
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1answer
283 views

Constructing flight recorder data [duplicate]

By just going off the public information about a flight and what one knows about an aircraft, is it possible to construct a differ version of a flight recorder's data well enough to fool investigators?...
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2answers
958 views

What happens to the transponder, FDR and CVR in case of an explosion?

Will the above mentioned equipment still work and transmit data/location information if an explosion occurs inside the aircraft?
5
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1answer
150 views

What would be the process to approve a minimal, standardized flight recorder for commercial balloons?

According to this article about the recent balloon event, the NSTB will try to interrogate personal electronic devices for any related data. Since some of these mentioned in the briefing do not ...
4
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3answers
48k views

What is a flight leg and why it is so important for an aircraft?

A flight leg is basically flight from one point to another point, (I'm not sure if flight leg number increase with touch and go around). I would like to know more about flight leg under what all ...
4
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2answers
4k views

What data file format is used by FDRs? [closed]

For analysing the FDR, data is downloaded to the local computer from the FDR and feed into the Analysing Software. I would like to know what is the file extension of the data stored on the FDR. I ...
4
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1answer
436 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 ...
4
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1answer
685 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 ...
4
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1answer
497 views

What protects the location beacon (pinger) of a flight data recorder?

The pictures of flight data recorders show that the location beacon (pinger) is outside the main protection encasement: Is it really a good idea to keep such a vital instrument unprotected? Or is ...
4
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3answers
516 views

Could you encode data in a Black Box ping?

Black boxes put out a sonar ping at about 32kHz. From what I've read, depending on sea conditions the ping will be audible at the surface out to about 16 km, leaving a search area of around 1024 ...
3
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3answers
523 views

Why not increase the number of Flight Data Recorders and add jettisoning capability?

With some Flight Data Recorders gone unrecoverable during crashes , what's the argument for not changing their locations, like wings or engines? Given their utility after accidents, why not increase ...
3
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2answers
298 views

Is it possible for the sensors which determine when an aircraft has landed in water to become damaged?

A plane has sensors that should transmit data back somewhere when it hits water correct? Is it possible that these can be turned off/damaged?
3
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2answers
2k views

What is the form of information stored in black box?

Black boxes contain the information regarding to a flight. What is the form of those information? Any particular language log?
3
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1answer
1k views

What is the smallest aircraft to have a CVR / FDR?

I was wondering what is the smallest aircraft to have a CVR (Cockpit Voice Recorder) and/or FDR (Flight Data Recorder)? Small single engine prop can sometimes have the avionics, like the G1000, that ...
3
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1answer
250 views

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 ...
3
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1answer
378 views

In what manner does the Cockpit Voice Recorder timestamps?

See here the transcript of ending moments of Aeroflot Flight 593 . The Wikipedia writes : (N.B.: All timestamps refer to the flight data recorder time, not GMT or local time.) What do 2265,2266......
3
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1answer
482 views

How much does a Black Box Underwater Locator Beacon (ULB) cost?

I'm curious if anybody can provide a rough price estimate for a commercial aviation ULB like those used on Black Boxes. Area of interest: Europe i.e. Euros, EASA CS-25. (For instance the RJI ULB-...
3
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2answers
686 views

How do airlines (or the government) retrieve information from the black box of an aircraft?

When black-boxes are found, how is the information retrieved from within the data storage? Is there a special kind of device used for this?
3
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1answer
815 views

Why don't they have two black boxes? [duplicate]

Why is it that black boxes don't float? From what I gather the answer is: So they will not float away from a water crash site. The ping can be heard underwater with sonar. Finding the ping, finds ...
3
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1answer
157 views

What is the format specification for Avidyne R9 flight data?

The Avidyne R9 records flight data five times per second and can export it for later analysis. I'm interested in parsing this data and exporting it to Google Earth / X-Plane for visualization. ...
3
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3answers
218 views

What's preventing aircraft manufacturers to record every single possible value in FDRs?

The preliminary report of the ET302 crash included some data from the Flight Data Recorder. However, the position of the trim cutoff switches is apparently not among the recorded values. Given that ...
3
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1answer
4k views

Which airplanes are required to have a Flight Data Recorder in Europe?

I know that not all aircraft are required to have a Flight Data Recorder (FDR) in Europe (for instance, a small single-engine airplane doesn't need one), but many are, and depending on the age of the ...
2
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1answer
971 views

Black boxes: great for crashes on land. How about additional "floaties" for water crashes (low-tech, light, cheap) [closed]

Without getting into the mess of redesigning existing Flight Data Recorders, I have a simple proposal that I think would help in deep water crashes. I propose that several floating cushion sets be ...
2
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1answer
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 ...