Indonesia AirAsia QZ8501
Printed page 113. PDF page 115.
for most of this segment, the nose down (forward) pitching commands of the PIC were ineffective because of the summing function of the system, resulting in no effective or sustained nose down commands to the flight controls. 113Open official document at PDF page 115Aircraft Accident Investigation Report: PT. Indonesia Air Asia, Airbus A320-216, PK-AXC, 28 December 2014