|
A320 CVR question.
The other day I reminded someone that we need to activate the CVR because we were about the run a checklist. Then he went on and told me that it was always on anyhow. He made me plug my headset into the "CVR test" inlet on the overhead panel. Indeed through my headset I was able to hear him talking into his mike. Of course that does not necessarily mean the CVR was recording but it made me want to read up on it. Unfortunately there is not much about the CVR in the manual. Any ideas where to read more about this?
|
Originally Posted by Normann
(Post 982480)
The other day I reminded someone that we need to activate the CVR because we were about the run a checklist. Then he went on and told me that it was always on anyhow. He made me plug my headset into the "CVR test" inlet on the overhead panel. Indeed through my headset I was able to hear him talking into his mike. Of course that does not necessarily mean the CVR was recording but it made me want to read up on it. Unfortunately there is not much about the CVR in the manual. Any ideas where to read more about this?
Electronic logic automatically activates the CVR. The Digital Flight Data Recorder (DFDR) shares the same circuitry and is activated whenever the CVR is activated. Both CVR and DFDR are activated: The GND CTL pb, located on the RCDR panel allows the pilot to activate the CVR when electronic logic has automatically deactivated it. •For 5 minutes when the aircraft electrical system is energized. •After the first engine start. •Anytime in flight. The controls for manual operation, testing the CVR, and erasing the tape, are located on the overhead RCDR panel. |
Originally Posted by Thrust Normal
(Post 982488)
You were right. The GND CTL button has to be pressed for it to record on the ground with no engines running. Here's a statement from the manual:
Electronic logic automatically activates the CVR. The Digital Flight Data Recorder (DFDR) shares the same circuitry and is activated whenever the CVR is activated. Both CVR and DFDR are activated: The GND CTL pb, located on the RCDR panel allows the pilot to activate the CVR when electronic logic has automatically deactivated it. •For 5 minutes when the aircraft electrical system is energized. •After the first engine start. •Anytime in flight. The controls for manual operation, testing the CVR, and erasing the tape, are located on the overhead RCDR panel. |
For another consulting job I have about 15 different A320 manuals. I don't see an answer in any of them.
|
Originally Posted by Thrust Normal
(Post 982497)
For another consulting job I have about 15 different A320 manuals. I don't see an answer in any of them.
|
Is it definitely recording when you put your headphone into the jack and hear yourself talk?
I would think the cockpit microphone systems would be active whenever they have electrical power, but the record function is only when the pb is pressed or the other conditions are met. |
Originally Posted by Flyby1206
(Post 982526)
Is it definitely recording when you put your headphone into the jack and hear yourself talk?
I would think the cockpit microphone systems would be active whenever they have electrical power, but the record function is only when the pb is pressed or the other conditions are met. |
The CVR headset jack is only used:
1) by maintenance to monitor the operation of the CVR. 2) by pilots on preflight to ensure the audio around the CA, FO and observer mikes is heard. It does not record! |
I'm surprised they don't have a playback button on the panel where it would play like, the last 5 seconds of recording, so that you could make sure it's actually recording.
That's how our DVR's work in the facility (ATC). |
| All times are GMT -8. The time now is 04:57 PM. |
Website Copyright © 2026 MH Sub I, LLC dba Internet Brands