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 6, 1986 SESSION [part1 of 2]

 

[39] [Ref. 2/6-20] [STS 51-L] LAUNCH DATE CHRONOLOGY.

LAUNCH DATE CHRONOLOGY

JANUARY 25

- L-1 DAY REVIEW - 11 AM

- LAUNCH DAY WEATHER QUESTIONABLE

MISSION MANAGEMENT TEAM (MMT) MTG - 9:30 PM

- LAUNCH DELAYED TO JANUARY 27 DUE TO WEATHER NO-GO

JANUARY 26

- MMT MTG - 2:00 PM

- LAUNCH CONFIRMED FOR 9:37 AM ON JANUARY 27

JANUARY 27

- LAUNCH ATTEMPT

- INITIAL DELAYS:

- HATCH MICROSWITCHES

- HATCH GSE

- LAUNCH DELAYED TO JANUARY 28 DUE TO HIGH CROSS WINDS (RTLS)

- MMT MTG - 2:00 PM

- CONCERN FOR COLD TEMPERATURES AFFECTING FACILITIES SUPPORTING ON TIME LAUNCH

JANUARY 28

- LAUNCH

- DELAY IN COUNTDOWN DUE TO GSE PROBLEMS AND FROZEN PIPE

- CONCERN FOR ICE ON SERVICE STRUCTURE & MOBILE LAUNCH PLATFORM (MLP)

- TECHNICAL MTG - 8 AM. REVIEW ICE CONCERN REGARDING ORBITER THERMAL PROTECTION SYSTEM

- DECISION TO:

- REALIGN INERTIAL MEASUREMENT UNIT

- ICE TEAM INSPECTION AND CLEAN MLP DECK AT T-20 MIN

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