Aircraft Accident Brief Ntsb/aab-02/01 (Pb2002-910401): Egypt Air Flight 990, Boeing 767-366er, Su-Gap - National Transportation Safety Board Page 57
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160 51
In its response to Boeing’s submission, EgyptAir summarized its position as
follows:
•
Boeing’s submission to the NTSB [National Transportation Safety Board]
dated October 31, 2000, contains many inaccuracies, omissions, and the
selective use of evidence.
•
Boeing’s own ground test and simulator data does not support its conclusion
that FDR data is inconsistent with a dual jam scenario.
•
A dual PCA control valve failure on the right elevator is consistent with the
EgyptAir flight 990 FDR data.
•
There is physical evidence consistent with a malfunction in the elevator control
system which might be a plausible cause for the accident.
P&W’s Submission
In an October 6, 2000, letter, P&W stated that it believed that “the facts, as
gathered to date, sufficiently represent Pratt & Whitney’s perspective on this crash.
Therefore, Pratt & Whitney will not be providing a further submission to be considered
during the development of the final report.”
NTSB/AAB-02/01
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