Only 3 minutes at cruise altitude...
Reached cruise altitude, stayed there for just 3 minutes: exactly when "the thin unbreathable air outside, is at its greatest. Any weak spots on the fuselage resulting from metal fatigue or even corrosion can fail due to the large pressure differential"...just 3 minutes there.
"The flight data recorder monitors cabin pressure and will reveal any sudden changes. The cockpit voice recorder may have recorded the sound of any failure of the aircraft’s skin but investigators will especially listen to the pilots’ speaking voices towards the end of the cockpit voice tape"
...in this case voices will change earlier, around 8/9 mins before end of tape.
They will very likely find the following:
"A slower rate of speech, long delays in answering questions and slurred words are tell-tale signs of hypoxia"
Last edited by ILS27LEFT; 24th Mar 2015 at 18:26.
Reason: Addition