jet aircraft fuel
паливо для ракетних двигунів
паливо для ракетних двигунів
Proton Exchange Membrane Fuel Cell (PEM fuel cell, PEMFC)
training aircraft (tng acft) / trainer aircraft
aircraft accident (flight accident; aircraft mishap)
aircraft mishap / flight accident, aircraft accident
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