scheduled maintenance

maintenance checks / routine maintenance, scheduled tasks

routine maintenance / scheduled tasks, maintenance checks

scheduled tasks / routine maintenance, maintenance checks

scheduled supplies

scheduled target

scheduled repair

non-scheduled air service

non-scheduled flight

non-scheduled operations

scheduled airline

scheduled carrier

scheduled flight

scheduled international air service

scheduled operations

scheduled

scheduled airlift

scheduled atomic fires

scheduled messenger service

scheduled mission

scheduled supply

scheduled training

scheduled wave

scheduled fire

scheduled messenger

scheduled speed

Sched (scheduled radio call)

scheduled radio call (Sched)

contingency maintenance / special maintenance

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

maintenance idling (periodic running of engine for maintenance purposes)

organizational maintenance (O-level) (day-to-day work that standard airfield maintenance groups perform in support of airfield operations)

special maintenance / contingency maintenance