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|
|
|
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H. Will the loss of function caused by this failure mode on its own become evident to the operating crew under normal circumstances?
| YES
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S. Does the failure mode cause a loss of function or other damage which could hurt or kill someone?
| NO
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E. Does the failure mode cause a loss of function or other damage which could breach any known environmental standard or regulation?
| NO
|
O. Does the failure mode have a direct adverse effect on operational capability (output, quality, customer service, or operating costs in addition to the direct cost of repair?
|
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O1. Is a task to detect whether the failure is occurring or about to occur technically feasible and worth doing?
|
NO
|
|
YES
|
YES
|
|
|
|
YES
|
|
H1. Is a task to detect whether the failure is occurring or about to occur technically feasible and worth doing?
|
|
S1. Is a task to detect whether the failure is occurring or about to occur technically feasible and worth doing?
| NO
|
S2. Is a scheduled restoration task to avoid failures technically feasible and worth doing?
| YES
|
Scheduled Restoration Task
|
| |
YES
|
YES
|
|
|
NO
|
|
|
|
|
Scheduled On-conditionTask
|
|
H2. Is a scheduled restoration task to reduce the failure rate technically feasible and worth doing?
|
|
S3. Is a scheduled discard task to avoid failures technically feasible and worth doing?
| YES
|
Scheduled Discard Task
|
| |
|
YES
|
NO
|
|
NO
|
|
|
|
|
Scheduled Restoration Task
|
|
H3. Is a scheduled discard task to reduce the failure rate technically feasible and worth doing?
|
|
S4. Is a combination of tasks to avoid failures technically feasible and worth doing?
| YES
|
Combination of Task
|
| |
|
YES
|
NO
|
|
NO
|
|
|
|
|
Scheduled Discard Task
|
|
H4. Is a failure-finding task to detect the failure technically feasible and worth doing?
|
|
Redesign is Compulsory
|
| |
| |
|
YES
|
YES
|
|
|
|
|
|
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Scheduled Failure Finding Task
|
|
H5. Could the multiple failure affect safety or the environment?
|
| |
| |
| |
|
YES
|
NO
|
|
|
|
|
|
|
Redesign is compulsory
|
|
No Scheduled Maintenance/ Redesign may be desirable
|
| |
| |
| |
|
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