Produced beginning in 1958, the HH-43B (USAF designation) is a modification of the HH-43A. A smaller turboshaft is used and installed above the fuselage, rather than an internal piston engine; as a result, the cabin capacity is upgraded from 4-5 up to ten passengers when compared to its predecessor. The HH-43B was the first Kaman helicopter to be fitted with composite main rotor blades, instead of solid spruce like all those previous.
Beginning in 1961, an H-43B set several records:
Source: "Kaman Aerospace Corporation: Evolution of the Helicopter", R.H. Jones, Vertiflite, May/June 1984, Published by AHS International, Page 30.
Source: "The American Helicopter", Hirschberg, Michael, 2000, Page 59.
VTOL type: Helicopter
Lift configuration: Synchropter (x2)
Crew required: 2
Crew seating: Side-by-side
Landing gear: Wheels (non-retractable)
Overall Length: 14.33 m (47.0 ft)
Max Gross Weight (ground): 4150 kg (9150 lb)
Max Range: 338 km (182 nm)