Questions tagged [cockpit-voice-recorder]

A cockpit voice recorder (CVR) is one of two flight recorders ("black boxes"), used to record audio in the cockpit for the purpose of investigation of accidents and incidents.

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1answer
1k views

Does the NTSB provide CVR audio recordings alongside transcripts in accident reports?

Reading the NTSB's accident report on US1549, there is a transcript of the CVR from page 149 onwards in the PDF (marked as page 130 on hardcopy). Small clips of the ATC/crew communications exist, but ...
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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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2answers
950 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?
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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. ...
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2answers
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Why are cockpit voice recorders limited to 2 hours recording?

With today's technology in memory storage, where simple voice recorders can record virtually endless durations, why are CVRs limited to only 2 hours. Is it the eternal "cost vs benefit" reason? ...
2
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2answers
556 views

Can airplanes transmit/relay flight data to ATC's periodically while in flight? [duplicate]

The flight data recorder is one important piece of information in the event of a crash. Can this information not be transmitted or relayed to the ATC's while the flight is air borne so that they don't ...
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 ...
29
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3answers
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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 ...
23
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3answers
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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 ...
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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 ...
2
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1answer
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Why doesn't the black box also record video? [duplicate]

Why does the black box still only record the cockpit's audio today, rather than also recording video of the cockpit? Wouldn't a video of the pilots' actions and what they were seeing outside the plane ...
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2answers
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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 ?
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2answers
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Where can I listen to the actual cockpit voice recorder audio from US Airways Flight 1549? [duplicate]

I have searched for the audio recorded on the CVR from the US Airways Flight 1549, but all clips and audios I found seems to be audio recorded from the flight control and not from microphones inside ...
12
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3answers
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Where are the microphones for the black box located in the cockpit?

All modern commercial airliners have a CVR (Cockpit Voice Recorder) on-board to record what the pilots are saying during the duration for a flight. I feel that the location of the microphones is ...
11
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1answer
1k views

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, ...
7
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1answer
495 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?
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1answer
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What is the meaning of HOT-1, HOT-2, CAM, etc., in cockpit voice recorder transcripts?

When reading the the written down recordings of CVR like here, for instance, it is common to see abbreviations like HOT-1, HOT-2 or CAM. I guess that CVR records multiple channels and the codes ...
11
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3answers
3k views

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 ...
4
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1answer
148 views

How did the long loop of tape in a magnetic cockpit voice recorder work?

How was the continuous looping of tape in an old-school mechanical cockpit voice recorder physically implemented? 30 minutes seems like a lot of tape to loop continuously, did it move more slowly than ...
3
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2answers
683 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?
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2answers
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Are plane's black boxes essentially useless tool in the modern age and how to improve upon it? [duplicate]

I am just reading the latest news on the air plane crash that happened couple days ago and it dawned on me that one too many times have I read a story on the NY Times where after black box is obtained,...
0
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1answer
184 views

Why could increases in cockpit voice and image recording potentially raise privacy concerns? [closed]

A major concern someone or other brings up against practically every suggestion to broaden the uses of cockpit voice recordings or add cockpit image/video recorders to the mix (both of these, ...