Is the Flight Data Recorder duplicated?

Question:
Do they put 2 FDRs in the plane to ensure redundancy?

Answers:

Did any of the huge flying boats, Martin 130 or Boeing 314, have dining rooms and sleeping berths?

no, but the cockpit voice recorder IS a seperate unit

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what kind of plane..?

Not that I am aware of. They definitely don't on military aircraft.

Iam looking to purchase some aircraft wire. i can not find it on the net anyware. any ideas.?

If you had two recorders, you'd need two data processors that all the sensor and instrumentation inputs go into before the data is sent over to the FDR.

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The FA-37 Talon?

To my knowledge there is not two flight data recorders on the aircraft. There are two recorders, one being the flight data recorder and the other being the cockpit voice recorder.

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How long does it take for a sonic boom to dissipate?

No, only one plus the CVR.

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