aircraft maintenance service

contingency maintenance / special maintenance

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

maintenance checks / routine maintenance, scheduled tasks

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)

routine maintenance / scheduled tasks, maintenance checks

scheduled tasks / routine maintenance, maintenance checks

special maintenance / contingency maintenance

training, maintenance and support service

aerodrome maintenance service

maintenance service

periodic preventive maintenance service

aircraft maintenance company (AMCO)

aircraft maintenance and repair

aircraft maintenance

aircraft maintenance inspector

general aircraft maintenance

aircraft maintenance detachment

aircraft maintenance officer

aircraft maintenance section

branch (military/service branch, armed service)

separate from active service / the service

Y service (Y-service) / Y-station

regional meteorological service/ regional weather service (RWS)

emergency service / emergency operations service

in-service aircraft

Tri-Service aircraft designation system

service aircraft

aircraft control and warning service

carrier aircraft service unit

training aircraft (tng acft) / trainer aircraft

aircraft accident (flight accident; aircraft mishap)