045-00-24_A M24 MAINTENANCE SCHEDULE
Issue A
Page 11
4.2
PERMITTED VARIATIONS (SEE NOTES)
Tasks controlled by flying hours
Maximum Variation
25 hour
10%
100 hour
10%
500 hour
10%
600 hour
10%
Tasks controlled by calendar time
Maximum Variation
6 Months
1 Month
Annual
None
3 year / 300 hours
3 months / 10%
Tasks controlled by more than one limit
The more restrictive limit shall be applied unless otherwise specified
NOTES:
1.
Permitted variations may not be applied to applicable airworthiness life limitations, airworthiness directives, Generic Requirements or
overhaul and test periods.
2.
Permitted variations for tasks controlled by flying hours should not be understood to be a maintenance planning tool, but as an
exceptional means to allow the operator to fly for a limited period of time until the required maintenance is performed.
3.
Any application of a permitted variation to the maintenance check cycle period must be recorded in the appropriate log book(s) together
with the reason for the variation by a person who is authorised to sign the log book entry for that particular check. Details of the
permitted variation must be made visible to the pilot.
4.
Permitted variations are not required to be deducted from the next scheduled check.
5.
The annual check may be anticipated by a maximum period of 62 days without loss of the continuity of the maintenance check cycle.
Thus, for example, where the full 62 days is invoked, the following annual check would become due 14 months after the completion of
the annual check which was anticipated. The period by which the annual check was anticipated and the date of the next annual check
shall be recorded in the appropriate log book(s).
