I'm looking for information about C Check interval for Airplaine.
• "A" Check Interval
The "A" Check is to be accomplished at intervals not to exceed 450 Flight Hours.
Tasks selected for "A" Check (or multiples thereof) are so specified in the "Interval" column of the task summary.
• "C" Check Interval
The "C" Check is to be accomplished at intervals not to exceed 3600 Flight hours or 15 months (calendar time), whichever comes first. Tasks selected for
"C" Check (or multiples thereof) are so specified in the "Interval" column of the task summary.
For multiple "A" and "C" Tasks, up to 4A and 8C, use multiples of basic check intervals stated above. (e.g., 2A = 900 FH, 3C = 10,800 FH / 45 Months).
2. An operator may desire to perform "A" or "C" interval tasks on a continuous or a progressive maintenance program system; e.g., "A" or "C" interval tasks
would be phased into a number of individual packages. This would be considered acceptable provided the maximum interval between successive tasks does
not exceed that listed in this document. The individual tasks or phases should not be so numerous as to preclude a substantive evaluation of the condition of
the entire airplane.
3. Operators deviating substantially from a normal type of utilization (those accumulating less than 100 flight hours/month/airplane (1200 hours/year)), should
consider the application and employment of a Low Utilization Maintenance Program based on calendar time. Upon request, Boeing will assist an operator
with the development of a Low Utilization Maintenance Program.
As I understand:
1C interval 3600 Hours or 15Mths
2C interval 7200 Hours or 30Mths
3C interval 10800 Hours or 45Mths
4C interval 14400 Hours or 60Mths
5C interval 18000 Hours or 75Mths
6C interval 21600 Hours or 90Mths
8C interval 28800 Hours or 120Mths
(is it right?)
info: Last check performed is C4 check (C4&C2&C1) in April 2018
info 2: Last C5 check performed in 2004 year.
If you additional Last perform + Interal C5 check, next due C5 check should be in 2010, right?
Operator informed me that from his side, after C4 check he will perform C5 check (C5 +C1) 15months after last performed C4 check.
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