Report of the PRESIDENTIAL COMMISSION
on the Space Shuttle Challenger Accident
Volume 4 Index
Hearings of the Presidential
Commission on the Space Shuttle Challenger Accident: February 6, 1986
to February 25, 1986
FEBRUARY 13, 1986 SESSION. [Part 2 of
2]
[542] [Ref 2/13-37] 51-L FAILURE ANALYSIS STATUS
REPORT
FAILURE SCENARIO (A) - EXTERNAL TANK HYDROGEN LEAK (FIRST EVENT)
EVENT (A3) - OVERHEATED O-RINGS FAIL IN RIGHT HAND SRM AFT FIELD
JOINT
- 51-L OBSERVATIONS/DATA
(A3.1) SRM HOT GAS BLOWING LEAK EVIDENT AT RIGHT HAND SRM AFT
FIELD JOINT (58.315 SECONDS)
(A3.2) RIGHT HAND SRM Pc STARTS DIVERGING (59.000
SECONDS)
(A3.3) SRB AND SSME THRUST VECTOR CONTROL EXCURSIONS (61 -
63 SECONDS)
- TESTS
(A3.6) O-RING "FAILURE" AT HIGH TEMPERATURE
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