Martin XA-23

Last revised August 20, 2000

The Model 187 was the manufacturer's name for a Glenn L. Martin Company proposal for a three-seat attack bomber powered by a pair of Wright R-3350-11 air-cooled radials. Wing span was to have been 61 feet 8 inches, and length was to have been 49 feet 0 inches. Gross weight was to have been 21,200 pounds, and estimated maximum speed was 380 mph. The Army exhibited sufficient interest in the Model 187 to order a prototype under the designation XA-23. However, the project was abandoned before anything could be built, and Martin concentrated instead on an adaptation of the basic design known as the Model 187B, which was eventually to emerge as the A-30 Baltimore.


  1. American Combat Planes, Third Enlarged Edition, Ray Wagner, Doubleday, 1982.

  2. U.S. Army Aircraft, 1908-1946, James C. Fahey, Ships and Aircraft, 1946.