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Kennedy Space Center
Sept. 28, 1995  5 a.m.

STS-73/Columbia Launch Scrub

	The launch of Space Shuttle Columbia was scrubbed at 4 a.m.
today.  During fueling operations a hydrogen leak was detected in
main engine No. 1.  It will be necessary to remove and replace the
engine’s fuel valve, an operation which can be performed at the launch
pad.  A schedule of work is being developed; however, it is estimated
that the next launch attempt will occur in about a week.

	A press briefing will be held at 8 a.m. and will be carried
on NASA Television.