Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident

This memorandum to Level I describes a visit to Marshall by Irving Davids of NASA Headquarters. Davids' visit was prompted by the nozzle O-ring problems suffered on STS 51-B (flight 17).

This memorandum to Level I describes a visit to Marshall by Irving Davids of NASA Headquarters. Davids' visit was prompted by the nozzle O-ring problems suffered on STS 51-B (flight 17).

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