SR-22
NO - not quite right regards Boeings statement (unless the FCTM has been seriously re-worded in the last year or so).
Boeing do not NORMALLY recommend....however where the Training Department are capable and the line pilots are capable and the concept has been demonstrated....then Boeing are happy for the procedure to be used.
Manual operation? Regardless of whether disconnected or speed deselected (ie armed) assuming a normal approach or operation the PF has to MANUALLY move the thrust lever, so flying with A/T disconnected is...manual and with speed deselected (ie armed) is...manual.
Benefits? Should you be distracted and your airspeed decreases in ARM mode the system will (politely) firstly suggest you're an idiot and allow you to correct things before proving you're an idiot and applying power; when disconnected you go straight through to proving you're an idiot courtesy of stickshaker.
Not to mention the immediate application of power in a GoAround (assuming TOGA is pressed).
Any idea the number of GoArounds that are f**ked up in one way or another?
Having power immediately applied and trending the aircraft AWAY from the ground not the worst thing for safety IMHO.
Finally a question (and apologies if my understanding is incorrect).
I believe the A/T on B777 and B767 can be "turned off" however Alpha Floor protection always remains and cannot be removed by the pilots.
Why is Alpha Floor protection good safety for 777/767 passengers but 737 passengers only deserve a stickshaker, stall and VERY hard (probably off airport) return to earth?
Cheers.
Last edited by galdian; 18th May 2013 at 11:26.