On Thu, 14 Jul 2005 13:45:57 +0000, Sham Gardner wrote:

In sci.space.shuttle Jim Oberg wrote:
I recall that there's been at least one actual
shuttle launch where a low-level sensor triggered
shutdown earlier than scheduled -- but nobody seems
to have any record of this at NASA. Does anyone
else recall which flight this was?

I'm not sure what the reason was, but 51-F, Challenger's last successful
mission had a premature engine shutdown resulting in an ATO. The mission was
still able to be carried out in the lower orbit.

http://www-pao.ksc.nasa.gov/kscpao/chron/sts51-f.htm

I was Guidance Support in the MCC backroom on that one.

Also, I think he's thinking of another mission.

There was a mission were a plug in one of the combustion chamber injectors
came out during the flight. On it's way out of the engine, it hit the
engine bell putting a hole in the cooling tubes. This caused a hydrogen
leak in the nozzle. The engine controller then adjusted the mixture ratio
oxygen rich and a low level shutdown (low on oxydyzer) occured right
around MECO.

--
Craig Fink
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