Crew rest
Do we know what was the rest time the crew had before the flight?
The flights that I did crossing the Atlantic back East, were the most tiring
because it was never easy to get enough sleep although we used to have
minimum 48 hrs rest before flying back.
Can the GPS data be used to establish which ADR is working correctly,
because GPS ground speed is very accurate and will give a very good
reference to which ADR is working correctly?