Originally Posted by
Airbubba
The old 30 minute CVR's used to have a union-mandated bulk erase button. And inevitably somehow this bulk erase button would often seem to 'accidentally' get pushed after an incident. As the NTSB put it in a famous 1979 upset investigation:
https://www.ntsb.gov/investigations/...ts/AAR8108.pdf
From what I can determine FAR 91.609 (g) wasn't enacted until 10 years later. And, how would it apply to Air Canada? Are they bound by Part 91 when operating in the U.S.? Seems they would be, but I don't know.