Shown is the first production AO-1B, redesignated OV-1B in 1962. View also photo 4741.

The following text from Aviation Week is not unique to the aircraft pictured:
09/12/1960. Grumman Mohawk observation plane for the US Army has been fitted with SLAR gear (side-looking airborne radar) carried in a pod slung below the belly. System provides the Army with radar photographic maps on 4 in x 5 in (10.2 x 12.7 mm) cut film or on 2.75 in (70 mm) strip film; inflight processor enables an observer to see developed film shortly after exposure. In addition to SLAR, all production Mohawks will be equipped with a high resolution optical photographic system as basic equipment.