1、Lessons Learned Entry: 0158Lesson Info:a71 Lesson Number: 0158a71 Lesson Date: 1992-10-09a71 Submitting Organization: KSCa71 Submitted by: Lisa L. MusgraveSubject: Payload Bay Door Cycling Description of Driving Event: Platforms 11A-1 and 11A-6 were retracted to support payload bay door opening. The
2、 platforms were not able to be extended for personnel access in support of aft propulsion system pod activities due to an interference when the orbiter payload bay doors were being cycled open and closed. Contact due to interference may cause damage to the payload bay doors and orbiter or personnel
3、may be injured.Lesson(s) Learned: Platforms 11A-1 and 11A-6 cause an interference problem when the PBDs are opened/closed during aft propulsion system (APS) servicing.Recommendation(s): Modify platforms 11A-1 and 11A-6 to allow them to be utilized with the PBDs in “normal“ service position.Evidence
4、of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AMission Directorate(s): N/AAdditional Key Phrase(s): a71 Configuration Managementa71 Facilitiesa71 Ground Operationsa71 Ground EquipmentAdditional Info: Approval Info: a71 Approval Date: 1994-06-06a71 Approval Name: James G. Klinea71 Approval Organization: KSC/HEIa71 Approval Phone Number: 407-867-7614Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
