In 1985 new A310-221s began replacing 727s on the Internal German Services (IGS) and A300s flew in the Caribbean networks afterwards the identical year although from early 1986 additional new lengthier vary A310-222s replaced some of the 747s on the slimmed-down transatlantic community subsequent ETOPS certification (acceptance by the Federal Aviation Administration (FAA) of transoceanic flying with twin-engined aircraft).