Canadian Handover Delayed Station Computers Recovering

Press Release From: National Space Development Agency of Japan
Posted: Friday, April 27, 2001

Saint-Hubert, Quebec, April 27, 2001 - Flight controllers worked successfully overnight troubleshooting computer problems onboard the International Space Station and plan to continue recovery of full computer operations on the complex today. The Station and Shuttle crews awoke this morning to find most of the Station's computers on line and operating well, although efforts are continuing to bring up the orbiting outpost's backup computers.

The crew today will assist with bringing the remaining Station computers on line, including swapping a backup payload computer for one of the Station's three command and control computers. Of the three Station command and control computers, one is on line and fully functional, providing full computer operations onboard the Station. The other two, which should serve as backups to the primary computer, are off line. Today's activities are planned to bring them on line as well.

Except for the Station computer problems now being resolved, flight controllers have identified no significant problems with any of the Station or Shuttle systems. Canadarm2 is still activated with prime power and remains fully operational. The computer difficulties experienced were related to the Space Station's systems, and did not involve Canadarm2.

In addition to the Station computer troubleshooting, the Station and Shuttle crews today will continue to concentrate on the transfer of supplies and equipment from the Shuttle to the Station. They also plan to close the Raffaello logistics carrier's hatch and later detach that module, using the Shuttle's robotic arm to reberth it in Endeavour's bay for a return to Earth. Almost 1,800 kg of equipment and supplies were unloaded from Raffaello onto the Station. Yesterday, the crew completed reloading it with items bound for Earth. The Shuttle is planned to boost the Station's altitude by about 4 kilometres today as well, the second such boost during the mission thus far.

An extra day was added to Endeavour's mission. The Shuttle will remain docked to the Station until Sunday with a landing on Tuesday. A further extension of the mission also may be considered.


For more information, contact:
Media Relations Office
Canadian Space Agency
Tel.: (450) 926-4345 or 4370
Fax: (450) 926-4352

Mission STS-100 Website:

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