<article><hdr>Airborne shot of a Curtiss O-11</hdr><body>
<hi style=afpcap>Yet another development by Curtiss of their O-1 Falcon series, the O-11 was powered by the fabledLiberty engine from World War One. The prototype XO-11 was a converted O-1, with a production run of 66 O-11s. A single O-11A was built incorporating some of the improvements of the O-1E including a refined engine cowling. The Army placed an order for 40 O-11As which was subsequently cancelled.</hi>