The US Air Force (USAF) has issued a new request for information (RFI) from defense contractors as part of its ongoing effort to develop the Next-Generation Air Refueling System (NGAS). This marks the latest step in a program launched in 2023, which has already seen earlier RFIs, including one in 2024 focused on propulsion technologies.
The Air Force envisions the NGAS entering service by 2040, though its requirements have been revised several times. At present, aerial refueling operations depend on the KC-135 Stratotanker, first introduced in the 1950s, and the KC-46 Pegasus, a Boeing 767-derived tanker that was intended to replace part of the KC-135 fleet.
Despite its role, the KC-46 program has faced persistent challenges, including delays and technical setbacks. Problems with its refueling boom, fuel system, and remote vision equipment have affected performance. Deliveries were even suspended in March 2025, when cracks were detected in two aircraft, before resuming in May after inspections.
The Pentagon’s FY2026 budget request suggests the Department of Defense may buy up to 75 more KC-46s instead of holding a new competition for an interim tanker. This decision highlights the balancing act between near-term capability needs and the longer-term development of NGAS.
