AF 447 Thread No. 11

[Chris Scott]

Quote from Dozy Wannabe (my insertions in square brackets):
"In this [A340 AIRPROX] case we have [had] an incident during which - for whatever reason - a protection mode has actually had a negative impact on the safety of the flight, hence the change in logic."

Hi Dozy,

Prior to our attention being drawn to the AF A340 case, I caused some controversy here by opining that the disengagement criteria for what we are now calling the AoA mode (of Normal Law) should be relaxed. I'm now having second thoughts, because the new (third) criterion MAY have allowed the AF A340 to stall during the second engagement of AoA mode. This followed a brief (3-second) resumption of Nz mode, during which the a/c pitched up by about 4 degrees.