The Air Rescue Service initially requested an air-to-air refueling system for the CH-3C, leading to the order of 33 HC-130H aircraft in July 1964. These were converted into tankers for helicopters needing refueling. In-flight helicopter refueling began during the Vietnam War in 1965, allowing extended flying operations with modified C-130 Hercules transports aiding search and rescue helicopters.
In 1966, HAAR trials succeeded when a C-130 tanker refueled a Sikorsky HH-3C helicopter. Subsequent tests at Wright-Patterson Air Force Base led to modifications of C-130s and H-3s for aerial refueling. The concept was tested in Southeast Asia on June 21, 1967.
Operation Eagle Claw highlighted HAAR's importance after its failure due to unsuitable helicopters and other issues during an attempted hostage rescue from Iran in April 1980. Since then, the number of air-refuelable helicopters has increased significantly.
During Operation Allied Force in 1999, Special Operations Squadrons deployed tanker crews for NATO aircrew rescues in Yugoslavia using MC-130E Combat Talon I and MC-130P Combat Shadow aircraft.
The MH-47 Chinook serves as a heavy-lift transport helicopter with advanced systems enabling long-range insertions through aerial refueling. Similarly, the MH-60 Black Hawk operates under the US Army's Special Operations Aviation Regiment SOAR with capabilities like medium assault and command control platforms enhanced by its extended aerial refueling probe.
The CV-22 Osprey combines vertical takeoff abilities with turboprop efficiency, ideal for special operations missions requiring infiltration or resupply over long distances. The KC-46 Pegasus provides direct fueling capabilities enhancing mission efficiency according to Maj. Anthony Belviso: “Normally...KC-46s can refuel us directly...much more quickly.”
However, design issues persist as evidenced by last year's crash off Japan's coast resulting from gearbox failures previously identified but unaddressed since 2013 according to Military.com reports.
Airbus continues advancing helicopter air-to-air refueling technologies demonstrated through successful A400M campaigns involving French Air Force H225M helicopters achieving significant fuel transfers expanding tactical operation ranges beyond previous limits demanding further developments related to tanker availability among other requirements.
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