1、Lessons Learned Entry: 1074Lesson Info:a71 Lesson Number: 1074a71 Lesson Date: 1998-02-01a71 Submitting Organization: HQa71 Submitted by: David M. LengyelSubject: Space Shuttle Program/Logistics/Cannibalization Description of Driving Event: Increased Cannibalization TrendsLesson(s) Learned: As repor
2、ted last year, long-term projections are still suggesting increasing cannibalization rates, increasing component repair turnaround times, and loss of repair capability for the Space Shuttle logistics programs. If the present trend is not arrested, support difficulties may arise in the next 3 or 4 ye
3、ars.Recommendation(s): NASA and USA should reexamine and take action to reverse the more worrying trends highlighted by the statistical trend data.Evidence of Recurrence Control Effectiveness: The Space Shuttle Program has recognized the concerns for long-term supportability and is proactively pursu
4、ing improvements. Cannibalizations continue to be closely monitored and are well within limits. There have been several concerns during this past year (seals and cryo heater controllers) that are requiring the adjustment of sparing levels. The Logistics organization is aggressively pursuing a soluti
5、on to specific problems as well as pursuing innovations to keep the rate below the standard.As mentioned in the response to Finding #9, the NSLD backlog is now decreasing as a result of USA action. This should ultimately reduce the repair turn around time for hardware although short-term Provided by
6、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-increases can be expected. Other initiatives such as the replacement of unserviceable test equipment at vendors are also in progress.Logistics and Engineering are developing common tools to integrate upgrade actio
7、ns, resolve supportability issues, and mitigate the loss of repair capability. The Problem Resolution Teams have increased the interfaces with Logistics, Engineering, and management to ensure a proactive and integrated effort in identifying problem areas and identifying solutions. Numerous initiativ
8、es are under way.Finally, NASA has funded through Space Shuttle upgrades the prototyping of a new expert logistics system which shows promise in ranking issues according to severity. This data might then be used to assure that limited funding available is used as economically and wisely as possible
9、in order to minimize risk in the most vulnerable areas.Documents Related to Lesson: N/AMission Directorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Aerospace Safety Advisory Panela71 Logisticsa71 Parts Materials & Processesa71 Policy & Planninga71 Risk Management/Assessmenta71 Safety & Mission AssuranceAdditional Info: Approval Info: a71 Approval Date: 2002-01-07a71 Approval Name: Bill Loewya71 Approval Organization: HQa71 Approval Phone Number: 202-358-0528Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
