A/THR and AP disconnection sequence (Airbus FBW)
 

Hi,

I recently flew with someone who was very adamant about the correct sequence of disconnection of A/THR and AP: AP first then A/THR...without being able to quote any ref.

I have been doing the exact opposite sequence for years (i.e A/THR then AP) because I was told so during my T/R and because I think this is the most logical way to do it.

Does anyone have an official Airbus literature about this (FCOM, FCTM, Briefing notes, Bulletins...)? I couldn't find anything so far.

As far as you know, is hybrid flying (A/THR off, AP on) not recommanded by Airbus (in normal situation)? I usually disconnect the A/THR in very busy terminal area on final above 1000' and keep AP on until cleared to land.

Thanks for your input'

This was not recommended on the 737 due to large trim changes as the autothrottle chased the speed.

On FBW bus I know of no requirement to disconnect A/P or A/t in any order and manual flying with autothrust engaged is permitted.

I know of a large Uk airline who don't allow flying without autothrust (until the retard) unless there is a fault with it.