accomplished by replacing the failed assembly with a good one. The following are the failure
rates for assemblies A, B and C, respectively:
AA = 300 failures per million hours
AB = 100 failures per million hours
Ac = 400 failures per million hours
The total system repair time for a failure in each of the assemblies (A, B, or C, respectively) is
as follows:
TA = 30 minutes
TB = 45 minutes
Tc = 10 minutes
Using the technique and formulas described in the WK6-5 lecture notes, please
calculate the Mean Time To Repair (MTTR) for the system.
If you could cut task time for one of the assemblies in half, which, which
assembly would make the biggest difference in the MTTR by doing that?
Fig: 1