Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
4A 4B 4C 4D 4E 4F 4G 4H 4I 4J 4K 4L 4M 4N 4O 4P 4Q 4R 4S 4T 4U 4V 4W 4X 4Y 4Z
1 4T TCH of Russian Airlines ICAO: TCH, Callsign: Trans-Charter, Designator 4T recalled by IATA RUS AVCODES
2 4T Transwest Air Limited Callsign: Athabaska, Formed by the merger of Air Sask and Athabaska Airways CDN AVCODES
3 4T Belair Airlines AG ICAO: BHP, Callsign: Belair, Ceased operations on 28 October 2017. Name changed from Balair / CTA Leisure Ltd. CH AVCODES
4 4T Pacific Rim Airlines Ltd.   CDN AVCODES