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More Details for 1968-09-10

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The Apollo Crew Safety Review Board, headed by William C. Schneider, met for the third time at MSFC, a meeting devoted primarily to safety factors for the Saturn V launch vehicle.

Of particular concern was the capability to shut down the vehicle during the period between ignition and liftoff should some problem arise (it could be shut down by several methods, including both manual and automatic engine shutdown). The Board also reviewed in detail Saturn V modifications that had eliminated more than 50 engine and electrical circuitry potential single-point failures (primarily through increased redundancy and circuitry checkout). Similarly the Board examined the reliability of guidance failure indicators and checkout of the emergency detection system during the final portion of the countdown. No additional action was needed, members concluded, because all functions in the launch vehicle were checked during the terminal count and tank pressure gauges were checked out by disconnecting the transducers and testing them individually several days before launch.

At the end of the meeting, Board members attended the POGO Management Review, where they were favorably impressed by the optimism among Saturn V program officials that the pogo problem had been solved (although contingency planning for a pogo occurrence should continue through AS-503).