aircraft maintenance and repair

maintenance and repair equipment

maintenance, repair and operation (MRO)

maintenance, repair and overhaul (MRO)

medical equipment maintenance and repair

airframe repair / patch repair

patch repair / airframe repair

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

heavy maintenance/repair

aircraft repair

contingency maintenance / special 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

aircraft track and balance (adjusting balance of aircraft)

battle damage assessment and repair (BDAR)

repair and refitting battalion

class IX supplies (Repair parts and components)

repair, replacement, testing and inspection (of components)

observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)

aircraft maintenance company (AMCO)

aircraft maintenance

aircraft maintenance inspector

aircraft maintenance service

general aircraft maintenance

Space System for Tracking Ships and Aircraft in Distress – Search and Rescue Satellite (COSPAS-SARSAT)

communications and control systems maintenance

development and maintenance of morale

establishment and maintenance of protective measures

operation and maintenance, Army (OMA)