VB-VT Heavier-than-air Aircraft.
VB BOMBING PLANES.
VF FIGHTING PLANES.
VG TRANSPORT (SINGLE ENGINE) PLANES.
VH AMBULANCE PLANES (OBSOLETE).
VJ GENERAL UTILITY PLANES.
VJR UTILITY-TRANSPORT PLANES.
VL GLIDERS.
VM MISCELLANEOUS PLANES.
VN TRAINING PLANES.
VO OBSERVATION PLANES.
VOS OBSERVATION-SCOUTING PLANES.
VP PATROL PLANES.
VPB PATROL BOMBING PLANES
VR TRANSPORT (MULTI-ENGINE) PLANES.
VS SCOUTING PLANES.
VSB SCOUTING-BOMBING PLANES.
VSN SCOUT-TRAINING PLANES.
VSO SCOUTING-OBSERVATION PLANES.
VT TORPEDO PLANES.
VTB TORPEDO BOMBING PLANES.
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For various types, and model designations of aircraft see Bureau of Aeronautics model designation of naval aircraft.
To obtain squadron symbols under the above classifications, to the letter "F" add the designation for the class of planes desired and the squadron number. Example:
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FVO-1. Observation Squadron 1.
FVPB-3. Patrol Bombing Squadron 3.
(To individualize the YA-YZ class designations, unless otherwise named add thereto the identification number of the particular craft in question.)