1、Lessons Learned Entry: 0116Lesson Info:a71 Lesson Number: 0116a71 Lesson Date: 1992-07-28a71 Submitting Organization: KSCa71 Submitted by: Lisa L. MusgraveSubject: External Tank (ET) and Solid Rocket Booster (SRB) Demating Operations Description of Driving Event: While demating the ET from the SRBs
2、during OMI S0033, TPS foam damage occurred on the +Y forward crossover area. Scraping noises were heard and interference was observed. The operation was stopped while a deviation to the OMI was written to allow north movement of the crane in an attempt to relieve the interference. The operation proc
3、eeded but foam damage was unavoidable due to insufficient clearance. This insufficient clearance was due to incorrect installation of support brackets caused by inaccurate OMI procedures.Lesson(s) Learned: Improper installation of support brackets creates insufficient clearance between ET and SRBs d
4、uring demating operations.Recommendation(s): Update OMI to reflect correct support bracket installation, including caution of clearance limitations if improperly installed.Evidence of Recurrence Control Effectiveness: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted without li
5、cense from IHS-,-,-Documents Related to Lesson: N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Flight Equipmenta71 Ground OperationsAdditional 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-,-,-
