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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum ( )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Posted by: Stev Myers (sdmyers& )
Date posted: Sat Feb 12 22:25:16 US/Eastern 2000
Subject: Failure Rate Conversion
I have an MTBF figure for an LRU operating in A(IC) Airborne Inhabited Cargo enviroment of 6,000 hrs. I am going to operate it in the G(M) Ground Mobile enviroment. Does anyone know the conversion factor I use to translate A(IC) to G(M)?

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Subject: Reliability Conversion Factors
Reply Posted by: Jon K. Ilseng ( )
Organization: Raytheon Systems Company
Date Posted: Tue Feb 15 17:55:11 US/Eastern 2000
Steve, Regarding your question on converting the MTBF for an Airborne Inhabited Cargo environment to a Ground Mobile environment. Page 176 of the Reliability Toolkit: Commerical Practices Edition has a table of Environmental Conversion Factors. To convert from a AIC to a Ground Mobile environment, multiply the AIC MTBF by 0.7. This should help.

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