BT-12

2 min read

The entry of the USA into World War II after the Japanese attack on Pearl Harbor in December 1941 highlighted the unpreparedness of the US Army Air Forces (USAAF) for war. Some preparations made before the “day of infamy” (December 7) proved insufficient and belated. Manufacturers struggled to quickly establish aircraft production in the necessary quantities to meet the demands of the national armed forces, with the need for training aircraft being particularly great.

Table of Contents

The Urgent Need for Trainers

This urgent demand explains why Fleetwings Inc., a company from Bristol, Pennsylvania, specializing in stainless steel manufacturing and the production of parts from this material for the US aviation industry, undertook to build a primary trainer aircraft for the USAAF under the designation BT-12.

Named Model 23 by the company, the aircraft outwardly appeared as a rather conventional low-wing monoplane with fixed landing gear, a tailwheel, and a power plant consisting of a single Pratt & Whitney R-985 radial piston engine. The instructor and student were housed in separate cockpits with fully duplicated controls, covered by a common transparent canopy.

Innovative Stainless Steel Construction

An unconventional feature of the BT-12 was embedded in its design: the latter was almost entirely made of stainless steel, with the exception of 65% of the wing skin, ailerons, flaps, part of the fuselage skin, elevators, and rudder, which were fabric-covered. Spot and roller welding techniques were extensively used in its construction.

The sole prototype, XBT-12 (serial number 39-719), successfully completed flight tests. A contract for 24 BT-12 aircraft was subsequently signed. All units were produced and delivered to the USAAF between 1942 and 1943.

Technical Specifications

Modification	BT-12
Wingspan, m	12.19
Length, m	8.89
Height, m	3.50
Wing area, m2	22.23
Empty weight	1 439
Maximum takeoff weight	20 00
Engine type	1 Piston engine Pratt Whitney R-985-25 Wasp Junior
Power, hp	1 x 450
Maximum speed, km/h	314
Cruising speed, km/h	240
Practical range, km	885
Service ceiling, m	7255
Crew, crew	2

Image and diagram gallery of the BT-12

United States

ArchivoAéreo Editorial Team

A group of aviation researchers and enthusiasts dedicated to documenting and preserving global aeronautical history. All articles are reviewed to ensure historical accuracy.

Sources & Accuracy

The information presented in this technical sheet has been compiled from declassified flight manuals, historical archives, and specialized literature. While we strive for maximum accuracy, some performance data may vary depending on the specific variant or operational conditions.

BT-12	BT-12
BT-12	BT-12
BT-12