A-1 Curtiss Model E (Triad) seaplane Renumbered AH-1. Believed no longer on charge by the time that the second alphanumeric series was instigated. A-2 Curtiss pusher landplane Renumbered E-1. Contemporary paperwork (dated 27/3/14) refers to this a/c being renumbered AH-2, but this is contradicted by all other sources! A-3 to A-4 Curtiss pusher seaplanes Renumbered AH-3 and AH-2. Believed delivered during 1912. B-1 to B-3 Wright Model CH seaplanes Renumbered AH-4 to AH-6. Believed that, although number AH-4 was allocated, B-1 was no longer on charge by the time that the second alphanumeric series was instigated. C-1 to C-5 Curtiss F-boats Renumbered AB-1 to AB-5. There is a photo of AB-3 taken May 12, 1916 of this plane departing the catapult of the armored cruiser USS North Carolina. D-1 Burgess K Renumbered AB-6, although it is possible that this aircraft was by then no longer on charge. D-2 Burgess H Renumbered AB-7. E-1; A-2 Renumbered after conversion to amphibian (known as the OWL - Over Water and Land)(renumbered AX-1).
