With a passenger capacity of four (in addition to the two crew), the aircraft was a rescue/utility helicopter. With a company designation of PD-18, it carried the designation HUP-1 in the U.S. Navy.
Design authority: Piasecki Helicopter Corporation
Primary manufacturer: Piasecki Helicopter Corporation
Parent type: No type defined
Aircraft status: No longer flying
VTOL type: Helicopter
Lift devices: 2 in Tandem (Fore/aft) configuration
Crew required: 2 in Side-by-side arrangement
Landing gear: Wheels (non-retractable)