AF447 final crew conversation - Thread No. 1

[ChristiaanJ]

For the sake of using the same terminology, could we agree to the following ?

A "deep stall" (or "locked-in stall") is the classic term for what happens to T-tailed aircraft, when AoA is such, that the wing wake 'blanks' the horizontal stabilser and negates pitch control.
As stated before, about the only way out is a tail parachute.

A "full stall" (or "fully developed stall") is when you pull the aircraft (any aicraft, Cessna or 747 or A330)) beyond the stall AoA and hold it there, either by control input or by THS trim.
With the horizontal stabiliser below the wing wake, full ND elevator, and trimming the THS ND should allow recovery, even if not instantly.

AF447 was in a full stall, not in a deep stall, as most 'aerodynamic engineering oriented' people here understand it.

CJ