Guaranteed no speculation in this post, just a question.
There's something I don't understand about the VCR. It says this runs for two hours and then starts from the beginning and overwrites what's on it.
Quote from post 624:
Last night the aircraft cockpit voice recorder (CVR), which records crew conversations, radio traffic and cockpit ambient sounds, was downloaded by ATSB specialists in Canberra. Unfortunately, the standard two hour recording which works on an endless loop principle did not contain the event. The oldest recording commences after the descent and diversion into Manila, so the event itself appears to have been overwritten.
Unqote
... the event seems to have been overwritten... By what? From the event (1 hour into the flight) to the end of the VCR is about 1 hour, from start of overwrite to the event is another hour so it should have been recorded.
The information I've used here (times of events, technical info etc.) is based on posts in this forum, so some of it may have to be taken with a grain of salt, but at least the press release quoted in post 624 sounded to be from an official source.
Last edited by Brakes on; 30th Jul 2008 at 00:37.