Boeing Model 203
In 1929, the Boeing company began developing a low-power biplane for pilot training at its instruction center. The front cockpit accommodated two passengers, allowing the aircraft to be used for multi-purpose roles. This new aircraft, designated Boeing Model 203, was a single-strut biplane with wooden wings and fabric covering.
The fuselage structure and braced tail unit were welded from steel tubes. Five such aircraft were built; the first was equipped with a 145 hp (108 kW) Axelson radial engine, and the last three with 165 hp (123 kW) engines of the same brand. The second unit was assembled to the Model 203A standard and fitted with a Wright Whirlwind J-6-5 radial engine.
Development and Initial Variants
The first Model 203 made its maiden flight on July 1, 1929. All five aircraft were sent to the Boeing company’s flight school. Four of them were later upgraded to the Model 203A standard by installing Wright engines.
Additionally, two more Model 203A units were assembled directly at the school. In most machines, the tail skids were later replaced with wheels to improve ground handling and operational versatility.
Evolution for Advanced Training
The final designation, Model 204B, was assigned to four Model 203A aircraft after their conversion to the advanced flight training standard. These were equipped with 220 hp (164 kW) Avro Lycoming R-680 radial engines, incorporating more diverse equipment.
They also featured an opaque hood over the student’s cockpit for instrument flight training. These modifications highlighted a continuous commitment to innovation in pilot education and advanced aviation techniques.
Technical Specifications
| Modification | Model 2 03 |
| Wingspan, m | 10.36 |
| Length, m | 7.42 |
| Height, m | 3.02 |
| Wing area, m2 | 27.87 |
| Empty weight | 811 |
| Maximum takeoff weight | 1169 |
| Engine type | 1 Piston engine Wright J-6-5 Whirlwind |
| Power, hp | 1 x 165 |
| Maximum speed, km/h | 177 |
| Cruising speed, km/h | 148 |
| Practical range, km | 644 |
| Maximum rate of climb, m/min | 183 |
| Service ceiling, m | 3960 |
| Crew | 2-3 |
Image and diagram gallery of the Boeing Model 203
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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.