Aircraft Scheduled Airframe Maintenance and Downtime Integrated Cost Model
Table 1
Typical maintenance checks, adapted from Eurocontrol [4].
Check
Location
Description
Duration
Line
At gate
Daily (before the first flight or when in transit). Visual inspection; fluid levels; tires and brakes; emergency equipment
~1 hour
A
At gate
Routine light maintenance; engine inspection
~10 hours
B
At gate
Similar to A check but with different tasks (may occur between consecutive A checks)
~10 hours to ~1 day
C
Hangar
Structural inspection of airframe, opening access panels; routine and nonroutine maintenance; run-in tests
~3 days to ~1 week
D
Hangar
Major structural inspection of the airframe after paint removal; engines, landing gear, and flaps removed; instruments, electronic and electrical equipment removed; interior fittings removed; hydraulic and pneumatic components removed