Max Service Ceiling
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In regards to the FL310 vs FL350 max flight altitude for some aircraft, is there a general summary of what the differences were and also what procedures are specific to climbing past FL310 aside from the climb speed limit of M66? I think i remember hearing or reading there was additional training for the higher altitude certified aircraft operators.
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Aircraft with the fully automatic pressurization system are certified for FL350.
Aircraft with the semi-automatic pressurization system are certified for FL310 or FL330. (varies with aircraft)The semi-automatic system has the pressurization panel from the 146.
The semi-automatic and fully automatic pressurization systems are of course operated differently so if you had only ever handled one of the two systems, I would assume that you would need some extra training. (probably a very brief CBT course)
Other than that, I can't really see what would be different other than speeds and pressurization system procedures.