TRANSPORT · TRANSPORT|land transport|land transport
- oibríocht dhá fhoireann Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- double crew operation
- en
- Definition the operation of an aircraft by two aircrew complements,one of which rests on board the aircraft while the other is in command Reference Multilingual Aeronautical Dictionary(AGARD,1980)