aircraft overhaul
капітальний ремонт літака
time to first overhaul in temperate climate
time to first overhaul in tropical climate
training aircraft (tng acft) / trainer aircraft
aircraft accident (flight accident; aircraft mishap)
aircraft armaments / aircraft weapons
aircraft modernization / aircraft upgrade
aircraft track and balance (adjusting balance of aircraft)
aircraft upgrade / aircraft modernization
aircraft weapons / aircraft armaments
flight accident / aircraft accident, aircraft mishap
low flying aircraft / low-flying aircraft