Aircraft Accident Brief Ntsb/aab-02/01 (Pb2002-910401): Egypt Air Flight 990, Boeing 767-366er, Su-Gap - National Transportation Safety Board Page 134
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160 Reference
Egyptian Investigation Team Requests
Reason of request and current status
Action 24: elevator
To support the analysis of possible mechanical
EIT requests an example of a hysteresis curve for an
hysteresis
failure.
autopilot driven elevator
EIT did not receive Boeing answer yet.
Action 25: elevator failure
To support the analysis of possible mechanical
With regards to Elevator System Friction and
scenario
failure.
Hysteresis (Boeing letter B-H200-17028.ASI), EIT
EIT did not receive Boeing answer yet.
requests Boeing evaluation of the impact of the
contents of this letter with Boeing letter concerning
Split Elevator Failure Scenario (letter B-H200-
16968-ASI-R2)
Action 26: elevator split
To support the analysis of possible mechanical
EIT requests Boeing to evaluate the aileron required
failure.
to match the bank angle during the elevator split.
EIT did not receive Boeing answer yet.
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