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Ford Tri-Motor specs
Country: United States of America
ICAO Type designator:TRIM
First flight:11 June 1926
Production ended: 1933
Production total:199
Series: 4-AT-A Tri-Motor: The original production version; 14 built.
4-AT-B Tri-Motor: Improved version, powered by three Wright J-5 Whirlwind engines; 39 built.
4-AT-C Tri-Motor: 4-AT-B, equipped with a Pratt & Whitney Wasp radial piston engine in the nose; 1 built
4-AT-D Tri-Motor: 4-AT-B, each with different engines and minor modifications; 3 built
4-AT-E Tri-Motor: 4-AT-B, with Wright J-6-9 Whirlwind engines; 24 built.
4-AT-F Tri-Motor: Similar to the Ford 4-AT-E; 1 built
5-AT-A Tri-Motor: Enlarged version, powered by three 420 hp Pratt & Whitney Wasp engines; 3 built
5-AT-B Tri-Motor: 5-AT-A, powered by Wasp C-1 or SC-1 engines; 41 built
5-AT-C Tri-Motor: Improved version, similar to the Ford 5-AT-A, 51 built
5-AT-D Tri-Motor: Increased-weight version, wings mounted 8 in (20 cm) higher, to increase cabin headroom; 20 built
5-AT-DS Tri-Motor: Seaplane version, fitted with Edo floats; one built.
6-AT-AS Tri-Motor: Seaplane version, fitted with Edo floats; one built.
Bushmaster 2000: Modernisation of Ford Tri-Motor by Bill Stout
C-4A: 5-AT-D Military transport version
JR-3 (5-AT-C) Tri-Motor: 5-AT-C version for U.S. Navy and USMC
XB-906: 5-AT-D was converted into a three-engined bomber aircraft.
Propulsion:3 piston engines
Maximum number of passengers:15
Maximum take-off mass:6136 kg
ICAO Mass group:3

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