1、Lessons Learned Entry: 0119Lesson Info:a71 Lesson Number: 0119a71 Lesson Date: 1992-08-10a71 Submitting Organization: KSCa71 Submitted by: Lisa L. MusgraveSubject: Solid Rocket Motor (SRM) Segment and Handling Ring Mating Description of Driving Event: On September 25, 1987, The solid rocket motor (S
2、RM) aft segment was being mated to the aft segment handling ring in the H77-0386 stand. The SRM segment and handling ring assembly was hoisted from the stand and moved to the breakover beam. The handling ring was mated to the breakover beam and the SRM segment was tilted to the horizontal position a
3、nd placed on the rail car. At this time it was noticed that a total of six bolts were missing from the SRM end-ring assembly. It is unknown when or who removed the bolts.Lesson(s) Learned: 1. Documentation lacking cross references between serial numbers and model numbers may result in inadequate con
4、figuration or missing hardware.2. Improper work authorization contributed to the unauthorized removal of six attachment bolts from the SRM aft segment lifting bracket.Recommendation(s): 1. Implement documentation to allow work to be traced to hardware serial numbers and personnel performing the task
5、2. Revise documentation to include hardware inspections and to correct discrepencies for all transportation support equipment transferred.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Evidence of Recurrence Control Effectiveness: N/ADocuments Rela
6、ted to Lesson: N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Configuration Managementa71 Ground Operationsa71 Packaging Handling StorageAdditional Info: Approval Info: a71 Approval Date: 1994-06-02a71 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-,-,-
