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4 [[circled]]

[[arrow right]] PRESSURES ON THE SYSTEM
(launch on time ; become operational)
[[arrow down]] built up

24 hrs before launch
SEQ of MTGS & DECISIONS

COLD

[[triangular dot pattern]] everyone & re-evaluate system

THIOROL [[?]] had concerns ; called teleconference
(~ 8:30 pm, before 11:30 am launch)

THIOROL [[?]] RECOMMENDED NOT TO LAUNCH
(WRITTEN CHARTS)
1 [[circled]] previous problems
2 [[circled]] exacerbated by T
3 [[circled]] this T, totally unknown
[[arrow right]] don't launch below 53 degrees F

MSFC managers

Never made it & NASA managers
(didn't even know there was a concern)

MEETING:
usually [[arrow right]] PROVE ITS SAFE
here [[arrow right]] PROVE ITS NOT SAFE

OPERATED TOTALLY OUTSIDE TEST BASE

LAUNCH COMMIT CRITERIA: 
[40-90]