Hello,
BEA report, page 109, Annexe 4, vitesse verticale[FT/Min] (bright red)
Up to 02:12 it was consistently negative, but then it jumped up to 0, stayed for a while and then oscilated. Just before impact it went positive to about 2500 ft/min a couple of times.
Why?
At an extreme rate of descent (-16'000 ft/min) what would the altitude tape look like? Would it be clear they are falling, or would it simply be a blur?
Could this strange fluctuation in the v/s indication be the 'straw that broke the camel's back' which completely confused the crew. Did the PF completely disregard the loss in altitude as he was convinced that the altitude indication was also unreliable?
Last edited by Jetdriver; 2nd Aug 2011 at 00:00.