Originally Posted by
Musician
The same 2 hours as the MAX, isn't it?
Recheck your sources on the MAX, 2 hours is on the older models.
Which is why, when maintenance came to the Alaskan door plug aircraft, the CVR of the event had already been overwritten and lost, since the crew didn't pull the breaker, though SOP tell them to do that.
Curiously, the final report addresses the company, stating that more robust SOP must be introduced to preserve CVR recordings.