1、Lessons Learned Entry: 0259Lesson Info:a71 Lesson Number: 0259a71 Lesson Date: 1993-03-08a71 Submitting Organization: LERCa71 Submitted by: Maria HavenhillSubject: Vacuum Detection Systems Description of Driving Event: General purpose computer S/N 00513 at the JAEL test facility operated for 11.5 ho
2、urs without cooling. The lack of forced air ventilation was caused by an air duct cover left on during installation.According to personnel working in JAEL and the results of JAELs investigation, the factors which contributed to the problem were inadequate supervision of individuals involved, a lack
3、of discipline in the practice of handling flight equipment, and failure of JAEL and quality assurance personnel to follow and/or verify existing procedures.Lesson(s) Learned: Vacuum detection alarm systems are not sufficient for monitoring air-cooled flight or prototype equipmentRecommendation(s): C
4、hange detection systems to a positive air flow indicator with an audible alarm signalEvidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Mission Directorate(s): N/AAdditiona
5、l Key Phrase(s): a71 Flight Equipmenta71 HardwareAdditional Info: Approval Info: a71 Approval Date: 1993-09-16a71 Approval Name: Maria Havenhilla71 Approval Organization: LERC/EBASa71 Approval Phone Number: 216-977-1483Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
