[1] The prototype was built at Fairchild's Farmingdale, Long Island facility.
[2] The FB-3 was an amphibious high-wing strut-braced monoplane with retractable landing gear, powered by a high pylon-mounted pusher configuration radial engine.
The two-step hull provided flotation with two outboard floats for stability.
The wings had metal spars and ribs with fabric covering.
[3] The prototype aircraft (NX7385) was test flown in 1929 but did go into production.