noun which may take the genitive case particle 'no', noun
outside an aircraft; outboard
Technical term used in aviation contexts to refer to the exterior of an aircraft or something located outside the fuselage.
機外の気温は氷点下50度に達することもある。
The temperature outside the aircraft can reach minus 50 degrees Celsius.
パイロットは機外の異常を確認した。
The pilot checked for abnormalities outside the aircraft.