Aircraft Accident Brief Ntsb/aab-02/01 (Pb2002-910401): Egypt Air Flight 990, Boeing 767-366er, Su-Gap - National Transportation Safety Board Page 131
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160 Reference
Egyptian Investigation Team Requests
Reason of request and current status
interference affecting RIV.
11. Complete file of Riverhead Radar from Airforce
from 06:30 to 07:05 UTC including:
Mode C validity
Mode 3 validity
Radar measured altitude
Decimal Latitude/longitude
Range and Azimuth angles from Radar site
Exhibit # 10 Flight Data
EIT requested an explanation for inner marker
To find the explanation for the inner marker
Recorder
signal which was recorded at the final phase of
signal recorded at the end of the dive.
dive.
Boeing comment on Action items received on
October 20, 2000, contained description for the
event.
Item is still opened
EIT requested a complete analysis for the elevator
To support the study regarding the causes for
behavior after autopilot disconnect events through
autopilot disconnect.
the last 25 hours recorded data.
Boeing presented the letters:
-
Autopilot disconnects on DFDR B-H200-
17114-ASI, dated 22 Nov, 2000
-
Autopilot disconnects evaluation B-H200-
17201-ASI, dated 22 March, 2001
EIT does not agree with the conclusions
2- Requests submitted directly to Boeing
Reference
Egyptian Investigation Team Requests
Reason of request and current status
Action 2: wreckage analysis
To support the analysis of the anomalies observed
EIT requests the elevators PCA’s vendor (Parker
with one of the recovered PCA’s.
Hannifin) to review the contents of Boeing letters
B-H200-17066-ASI and B-H200-17082-ASI for
EIT did not receive Boeing answer yet.
concurrence relative to remarks made by Parker
th
representative (Steve Weik) during the June 28
Systems Group meeting at the NTSB about the
hypothetical position of the spring coil adjacent to
the outside diameter of the spring guide.
EIT requests Boeing to evaluate Page 15 photo
marks relative to the scenarios considered in the
referenced letters. Also, the EIT would like to know
if these marks are consistent with a bellcrank shear
for number 3 PCA?
14
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