Aircraft Maint. Management, Maintainability allocation method.
Designed for Maintainability Allocation Method
An aerospace system’s required Maintainability MTTR is 3 hours. The system composed four
independent subsystem forming a series configuration. The constant failure rate for subsystem
1, 2, 3, 4 is 0.002, 0.004, 0.005, 0.001 respectively. Please use the weight factors to allocate
the system MTTR to subsystems.

how do I work this out.