1、Lessons Learned Entry: 1332Lesson Info:a71 Lesson Number: 1332a71 Lesson Date: 2002-11-27a71 Submitting Organization: GRCa71 Submitted by: Michael DohertySubject: Allow for More Flexibility of ISS Protocols During Troubleshooting Phases Description of Driving Event: The Physics of Colloids in Space
2、(PCS) experiment was launched on ISS Flight 6A in April 2001 was activated in EXPRESS Rack 2 on May 31, 2001, and was successfully operated on the International Space Station (ISS) until February 24, 2002. On February 24, 2002, at the onset of a scheduled operational run on ISS, the PCS flight syste
3、m computer (within the PCS Avionics Section) failed to boot up. Once the Expedition 4 crew member had unsuccessfully executed the procedures on March 20, 2002, there was no discussion held with him to ask his opinion on the procedure and if he felt it worthwhile to retry the procedure. Also, the dec
4、ision by the Payload Operations Director to terminate the recovery procedures and tear down the setup came quickly, with very little room for the PD to appeal. The Project found during post-flight face-to-face discussions with the astronaut that he would have been willing to retry the procedures whe
5、n he had time later.Lesson(s) Learned: The response to this lesson is that in these situations, the ISS operations system needs to be more flexible.Recommendation(s): The astronaut should be asked his opinion on the procedure and whether he is willing to retry. Also, the PD will be better supported
6、in the future in real time decisions to terminate a procedure if there is more consideration given to appeal - i.e., solicit what the PD thinks should be done, before tearing the setup down.Evidence of Recurrence Control Effectiveness: Provided by IHSNot for ResaleNo reproduction or networking permi
7、tted without license from IHS-,-,-N/ADocuments Related to Lesson: N/AMission Directorate(s): a71 Exploration Systemsa71 Aeronautics ResearchAdditional Key Phrase(s): a71 Computersa71 Flight Equipmenta71 Flight Operationsa71 Hardwarea71 Payloadsa71 Safety & Mission Assurancea71 SoftwareAdditional Info: Approval Info: a71 Approval Date: 2003-04-07a71 Approval Name: Jim Cerya71 Approval Organization: GRCa71 Approval Phone Number: 216-433-3002Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
