Reading the 2nd BEA interim report’s analysis of ACARS message timing provides us with a further refinement of a calculation of AF 447’s terminal vertical speed (posted here) based on the cabin vertical speed advisory.
The latest revision of the BEA report on the AF 447 accident omits mention of the last ACARS message received, a cabin vertical speed advisory. But from this message we can infer at least approximations of the final segments of AF 447’s flight profile.
With a Bachelor’s in Mechanical Engineering and a Master’s in Systems Engineering, Matthew Squair is a principal consultant with Jacobs Australia. His professional practice is the assurance of safety, software and cyber-security, and he writes, teaches and consults on these subjects. He can be contacted at firstname.lastname@example.org