Aviation Traders (Engineering) Ltd formed 1949 as design, manufacturing and overhaul arm of larger group. Achieved some success marketing 7-seat conversions of Prentice trainer. Bigger undertaking was ATL.90 Accountant twin-turboprop airliner (9 July 1957). Last original design was ATL.98 Carvair. ATEL produced 22 of these DC-4 rebuilds with high 747-style cockpit above unobstructed interior with nose door for (typically) 5 cars and 22 passengers.