A Lack Of Pre-Takeoff Control Checks
A review of the quick-access recorder, a backup to the flight-data recorder, showed that out of the Gulfstream GIV's last 176 takeoffs, only two complete and 16 partial control checks were done. The crash occurred on takeoff number 176.
A review of the quick-access recorder, a backup to the flight-data recorder, showed that out of the Gulfstream GIV's last 176 takeoffs, only two complete and 16 partial control checks were done. The crash occurred on takeoff number 176.
Takeoff
Number Checks Performed
1 Elevator & Aileron
2 Elevator & Aileron
3 Full Control Check
4 Elevator & Aileron
8 Rudder
9 Elevator & Aileron
10 Elevator & Aileron
14 Full Control Check
21 Rudder
31 Elevator & Aileron
36 Rudder
47 Elevator & Aileron
74 Elevator & Aileron
108 Elevator & Aileron
112 Elevator & Aileron
121 Elevator & Aileron
146 Aileron
164 Elevator & Aileron
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