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STS-108 Mission Status Report #19


STS-108    Report # 19 
 Friday, Dec. 14, 2001 - 8 p.m. CST 
 The crews of Endeavour and the International Space Station will spend a
final night together tonight, preparing for Endeavour's departure from
the complex Saturday.

Endeavour will leave the station with a new crew and almost three tons of
new food, supplies, experiments and equipment. Endeavour will bring home
the offgoing Expedition Three station crew -- Commander Frank Culbertson,
Pilot Vladimir Dezhurov and Flight Engineer Mikhail Tyurin -- and more
than two tons of unneeded station gear, food containers, clothes, and
other cargo. The station's Expedition Four crew -- Commander Yury
Onufrienko and Flight Engineers Dan Bursch and Carl Walz -- will remain
aboard the outpost until May 2002.

Endeavour Pilot Mark Kelly used the shuttle's robotic arm to detach the
Raffaello logistics carrier from the station today and reberth it in
Endeavour's payload bay. Raffaello was latched back into the shuttle bay
at 4:44 p.m. CST. This morning, Dezhurov and Onufrienko worked together
to replace a faulty air conditioner compressor in the station's Zvezda
living quarters module as the crews completed cargo transfer activities.

Flight controllers are planning slight changes to Endeavour's departure
from the station Saturday, allowing time for a small jet firing by the
shuttle to boost the station's future path away from a piece of space
debris that could pass near the complex on Sunday. Mission Control was
notified early today that a spent Russian rocket upper stage launched in
the 1970s could pass within three miles of the station if Endeavour did
not perform the engine firing. With the shuttle reboost now planned on
Friday, the station is predicted to instead pass more than 40 miles away
from the debris on Sunday.

The new plan for Saturday's activities will have the station and shuttle
crews bid farewell to one another and close hatches between the two
spacecraft at about 7:30 a.m. CST. Endeavour will pulse its steering jets
gradually for about 30 minutes beginning at about 8:55 a.m. CST to raise
the station's altitude by almost three-quarters of a mile. Endeavour will
then undock from the station at about 10:37 a.m. CST. Because of the
changes, Endeavour will not perform a full-circle flyaround of the
station after undocking. Instead, Endeavour will undock from the station
and fly only a quarter circle of the complex, to a point about 400 feet
directly above the station where it will fire its engines at about 11:20
a.m. CST to depart the vicinity of the oribting outpost.

Endeavour's crew will begin a sleep period today at 8:19 p.m. CST and
awaken at 4:17 a.m. CST Saturday. The next Mission Control Status report
will be issued at about 5 a.m. CST Saturday or as events warrant.

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