1、Lessons Learned Entry: 0133Lesson Info:a71 Lesson Number: 0133a71 Lesson Date: 1992-09-24a71 Submitting Organization: KSCa71 Submitted by: David PenningtonSubject: Orbiter Avionics System. Description of Driving Event: Return and supply flexhoses are connected between the ground coolant boom and the
2、 LH2 check-out umbilical carrier plate. Because the hoses are too long for such a short connection area, hose kinking occurs. This situation can cause damage to the orbiter avionics systems due to overheating because of loss of freon cooling.Lesson(s) Learned: Cooling system flexhoses that supply th
3、e orbiter avionics system are too long, allowing hose kinking to occur.Recommendation(s): Redesign/shorten the return and supply flexhoses to prevent them from kinking.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AProvided by IHSNot for ResaleNo reproduction or net
4、working permitted without license from IHS-,-,-Mission Directorate(s): N/AAdditional Key Phrase(s): a71 Ground Operationsa71 Ground Equipmenta71 HardwareAdditional Info: Approval Info: a71 Approval Date: 1994-06-03a71 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-,-,-
