duration of maintenance, including active maintenance time, and technical and logistic delays incurred, for a given maintenance action
NOTE 1 All times mentioned in the figure are time intervals or sequences of time intervals.
NOTE 2 In the bottom row, RT signifies required time and NRT signifies non-required time, although these are not normative abbreviated terms.
NOTE 3 In some cases, it can be possible to perform some maintenance when an item remains functioning as required; see also on-line maintenance. To keep Figure 1 simple, the time associated with such maintenance is not addressed in the figure.
Figure 1 – Times related to operation and maintenance
NOTE All times mentioned in the figure are time intervals or sequences of time intervals.
Figure 2 – Maintenance times
Note 1 to entry: Time spent in on-line maintenance is a part of the maintenance time.
Note 2 to entry: Maintenance time excludes fault detection time and administrative delay.
|