stevenmeyer2005
Topic Author
Posts: 36
Joined: Sun Jan 31, 2010 2:31 pm

Flight Recorder Ping

Mon Mar 17, 2014 11:10 pm

Is it possible to turn the flight recorder off from the flight deck? For example by removing a fuse?

Does the flight recorder start pinging when an impact of the structure of the fuselage is detected?
Steven Meyer
 
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zeke
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RE: Flight Recorder Ping

Mon Mar 17, 2014 11:57 pm

Quoting stevenmeyer2005 (Thread starter):

Is it possible to turn the flight recorder off from the flight deck? For example by removing a fuse?

Yes, and in some instances crew need to pull that to preserve the information on the recorder.

Quoting stevenmeyer2005 (Thread starter):
Does the flight recorder start pinging when an impact of the structure of the fuselage is detected?

No, it does have an underwater locator that transmits low power for around a month minimum.
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HAWK21M
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RE: Flight Recorder Ping

Tue Mar 18, 2014 9:18 am

Quoting stevenmeyer2005 (Thread starter):
Is it possible to turn the flight recorder off from the flight deck? For example by removing a fuse?

Yes through a CB....but some aircraft can have a always on in air logic.

Quoting stevenmeyer2005 (Thread starter):
Does the flight recorder start pinging when an impact of the structure of the fuselage is detected?

no thats the function of the Impact ELT ...however a water activated beacon [underwater locator beacon/ULB] will send a transmission.
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Dalmd88
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RE: Flight Recorder Ping

Tue Mar 18, 2014 7:48 pm

While the recoders might be able to be turned off, the pingers on the Data and Voice recorders can not be turned off from the flight deck. They each have their own dedicated battery. The pinger and the battery are about the size of a two cell "c" flash light mounted to the outside of the recorder. They get tested I think yearly with a life cycle of a few years. Can't recall the actual numbers.
 
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HAWK21M
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RE: Flight Recorder Ping

Wed Mar 19, 2014 7:18 am

The ULB would have a stamped validity date on it....
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Dalmd88
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RE: Flight Recorder Ping

Thu Mar 20, 2014 12:07 am

Quoting hawk21m (Reply 4):
The ULB would have a stamped validity date on it...

True, but I've changed a few well before that date when they fail the test.
 
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HAWK21M
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RE: Flight Recorder Ping

Thu Apr 03, 2014 9:56 am

Quoting Dalmd88 (Reply 5):

True, but I've changed a few well before that date when they fail the test.

True....but scheduled replacement would be based on the stamped date unless as you state a test found a fault warranting its replacement.
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L-188
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RE: Flight Recorder Ping

Sun Apr 06, 2014 2:29 am

Quoting zeke (Reply 1):
Is it possible to turn the flight recorder off from the flight deck? For example by removing a fuse?
Yes, and in some instances crew need to pull that to preserve the information on the recorder.

Important point.

Didn't that FedEx crew that had the company rider go nuts with the crash axe due that to preserve the recording of the attack?
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jetblueguy22
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RE: Flight Recorder Ping

Sun Apr 06, 2014 3:09 am

Quoting L-188 (Reply 7):
Didn't that FedEx crew that had the company rider go nuts with the crash axe due that to preserve the recording of the attack?

I think the attacker pulled the fuse prior to the crew getting onboard hoping that the event wouldn't be on tape. The F/E caught it and I think they got it all. Though it has been a while since I read all of this.
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HAWK21M
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RE: Flight Recorder Ping

Tue Apr 08, 2014 9:52 am

Quoting jetblueguy22 (Reply 8):
I think the attacker pulled the fuse prior to the crew getting onboard hoping that the event wouldn't be on tape. The F/E caught it and I think they got it all. Though it has been a while since I read all of this.

That was the CVR CB.
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