field maintenance
ремонт / ТО в польових умовах; польове технічне обслуговування
ремонт / ТО в польових умовах; польове технічне обслуговування
contingency maintenance / special maintenance
maintenance checks / routine maintenance, scheduled tasks
maintenance idling (periodic running of engine for maintenance purposes)
routine maintenance / scheduled tasks, maintenance checks
field maintenance squadron (FMS)
field officer (field-grade officer / senior officer)
air support field pack, field pack air support, airborne / para (air support) / Pathfinder Bergen
combination field and field-off duty uniform