Fairchild 21

The Kreider-Reisner KR-21-A was a 1928 American two-seat biplane. It was designed and built by the Kreider-Reisner Aircraft Company of Hagerstown, Maryland. Fairchild Aircraft took over Kreider-Reisner in 1929 and continued to build them, as the Fairchild KR-21, later the Fairchild 21.

Design and development
Designed by Fred Seiler Jr., H.L. Puckett states "over 200 were built in 6 different models."

The KR-21-A was a wire braced biplane with two open tandem cockpits and powered by a 100 hp (60 kW) Kinner K-5 radial piston engine. It was of mixed construction and had a fixed tailwheel landing gear and was fitted with dual controls.

The KR-21-B was a more powerful biplane development, using a 125 bhp Kinner B-5 engine.