MISSION CONTROL CENTER
STS-67 Status Report #10

Tuesday, March 7, 1995, 9 a.m. CST

Earlier this morning, Blue Team members, Payload Commander Tammy
Jernigan, Mission Specialist Wendy Lawrence and Payload Specialist Sam
Durrance, continued with planned maneuvers of the orbiter in support
of Astro-2 telescope observations of stars, galaxies and the
interstellar medium. Investigations also continue for several middeck
experiments.

Earlier this morning, flight controllers did some troubleshooting
after a circuit breaker tripped, cutting power to a portion of the
Commercial Materials Dispersion Apparatus Instrumentation Technology
Associates Experiment (CMIX). When Lawrence reset the circuit breaker
on the middeck experiment and repowered the heater controller, ground
controllers noticed a short. Lawrence subsequently was directed to
turn off the heater, which maintained a slightly higher temperature
(20 degrees Centigrade vs. 4 degrees Centigrade) for a portion of the
Commercial Refrigerator Incubator Module (CRIM).  three of the four
experiment trays already had been chemically fixed, and scientists
won't know until after landing what affect the heater loss will have
on the samples. The CMIX/CRIM experiments which require no heat,
referred to as the "cold" experiments, were unaffected by this event.

Other activities performed by the Blue Team include a successful
alignment of the inertial measurement units which was performed by
Lawrence, and a 12-hour water dump using the flash evaporator system
was initiated this morning.

Jernigan officially had the morning off in the the first round of
off-duty shifts designed to give the crew a break from their busy
schedule. Durrance was scheduled for some time off on the second half
of the Blue Team day. Red Team Mission Specialist John Grunsfeld will
have the first portion of his day off this morning and Payload
Specialist Ron Parise will have the afternoon off.

The Red Team -- Commander Steve Oswald, Pilot Bill Gregory, Grunsfeld
and Parise -- went to sleep at about 2 a.m. CST and will be awakened
at about 10 a.m. CST.

Endeavour continues to circle the Earth every 91 minutes at an
altitude of approximately 190 nautical miles.

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