KC-46 Pegasus

You will learn how the KC-46 Pegasus works as a tanker and transport, why it carries both a boom and drogues, and what held back its entry into service. You can use its layout, fuel figures and basing history to understand where it fits among current United States tankers.

A 767 Turned Into a Tanker and Transport

The Boeing KC-46 Pegasus is an American military aerial refueling and strategic transport aircraft developed by Boeing from its 767 jet airliner. In February 2011 the United States Air Force selected it as the winner in the KC-X tanker competition to replace older Boeing KC-135 Stratotankers, and the first aircraft reached the Air Force in January 2019. If you picture a 767 airliner, you can keep that shape in mind and then add military fuel systems, defensive aids and cargo handling. The type is in service, with manufacturing dated from 2013 to the present, first flight on 25 September 2015 and introduction in 2019. It was developed from the Boeing KC-767. The program lists the United States Air Force as primary user, with the Japan Air Self-Defense Force and the Israeli Air Force as additional users.

Why Does One Aircraft Carry Both a Boom and Drogues?

You may know that Air Force receivers generally use a rigid boom while many Navy, Marine Corps and allied aircraft use a probe and basket. The KC-46 carries both systems so one sortie can serve both groups without changing configuration on the ground. At the rear sits a refueling boom, complemented by wing mounted drogue pods and a centerline drogue system under the rear fuselage. That mix lets the crew perform boom and drogue refueling in a single mission. To see how the rigid system guides contact, read the explainer on the rigid flying boom. To contrast it with the flexible hose, read the guide to the hose and basket method. When you compare them, watch who does the steering in each case and where the operator sits.

Where Does the Boom Operator Sit Now?

In older tankers you often find a single boom operator lying prone at the tail with a direct view of the receiver. In the KC-46 you will not find that station. The aircraft has two Aerial Refueling Operator Stations just behind the flight deck, which gives redundancy and makes it easier to train new boom operators. Each station works with imagery from the Remote Vision System. Images from multispectral cameras appear on three screens, while a central two dimensional and three dimensional display gives a rear facing view. The system calls for stereoscopic glasses for best effect and is intended to support refueling in complete darkness with both aircraft blacked out. Externally, below the cockpit, director lights help receiving pilots judge height, range and alignment inside boom reach, including at night. If you fly in simulation, think of it as moving the operator forward and replacing the window with cameras and lights.

What Went Wrong With Vision and Boom Pressure?

Two problems followed the first deliveries and you should understand both because they explain later limits. The first delivery took place on 10 January 2019, well past the original 2016 delivery date, with two issues outstanding and funds withheld. One was inadequate boom pressure when refueling the A-10. The other was glare induced distortion under certain conditions in the Remote Vision System. The Air Force acknowledged that it had not given Boeing adequate specifications for the A-10. At Milestone C Boeing had offered a boom design that used the international standard of 1,400 lbs of thrust resistance, which the Air Force accepted, but the A-10 is only able to generate 650 lbs. The boom had started with a hydraulic relief valve system similar to those on the KC-10 and KC-767 to reduce excessive axial pressure. To answer the stiff boom behavior that blocked light and thrust limited aircraft such as the A-10, Boeing replaced the actuator with a pressure flow PQ valve. On vision, the Remote Vision System showed depth compression and curvature distortions that affected motion perception. The planned RVS 2.0 upgrade is described as using enhanced cameras and a full color high definition display to improve depth perception. The detailed KC-46 history traces these fixes through test flights, refueling trials and certification steps.

From Restricted Use to Worldwide Deployments

When the first two aircraft arrived at the 22d Air Refueling Wing at McConnell Air Force Base on 25 January 2019, as aircraft 15-46009 and 17-46031, the fleet was still under close watch. The 97th Air Mobility Wing at Altus Air Force Base received its first aircraft in February 2019. In March 2019 the Air Force halted deliveries after loose material and debris were found in delivered aircraft. In August 2019 the 157th Air Refueling Wing at Pease Air National Guard Base received its first aircraft. In September 2019 the Air Force restricted the type from carrying cargo and passengers because floor cargo locks could unlock in flight. A fix was approved in November 2019 and fitted to delivered aircraft. By 20 December 2019 four aircraft had received new cargo locks and the Air Force closed the Category 1 deficiency and cleared fitted aircraft for cargo and passenger operations. In June 2020 the 916th Air Refueling Wing at Seymour Johnson Air Force Base received its first aircraft. By January 2021 Boeing had delivered 42 aircraft to the Air Force and was on contract for 94 tankers. In early 2021 the Air Force cleared limited operational use for United States based refueling only, with other tankers required for deployments to combat areas. At that point it could refuel the B-52, F-15, F-16 and F/A-18, but was not approved to service the A-10, F-22, F-35, B-1 or B-2, with full combat readiness expected by 2023. During September 2022 the Air Force approved general operational use and closed a 15 month evaluation period. In June 2024 the Air Force completed a 45 hour non stop flight around the globe as part of Project Magellan, taking off and landing at McConnell while being refueled several times and refueling other operational aircraft at various places around the world.

How Many Aircraft, and Who Flies Them?

You can track the fleet in three blocks. For the United States, Boeing stated in May 2026 that more than 110 KC-46A tankers were operating around the world, including 107 with the United States Air Force, which intends to procure 263 in total, a number which has grown with the cancellation of the KC-Y program and may grow further if the Next Generation Air refueling System program does not develop as planned. The number built is listed as 113 as of August 2026 on the cited Wikipedia page. Bases named in the record include McConnell as home base, chosen for low construction costs and high local demand for air refueling where KC-135s were based, plus up to 10 operating bases. Crews train at Altus, chosen for limited construction needs and existing experience with training for the C-17 Globemaster and the KC-135. Seymour Johnson was announced as the preferred alternative for the first Reserve led main operating base with arrival expected in fiscal year 2019, with Tinker Air Force Base, Westover Air Reserve Base and Grissom Air Reserve Base named as reasonable alternatives, followed by an Environmental Impact Analysis Process. For Japan, selection came in October 2015, with common operations and training with the United States Air Force cited and interest in refueling MV-22 Osprey tiltrotors noted. Japan received its first aircraft in October 2021 after pilot training started in June 2021, ordered additional pairs through December 2022 for a total of six, and all six are listed as delivered with authorization for a further nine subject to contract. For Israel, the State Department approved a Foreign Military Sale of eight aircraft with equipment in March 2020, an agreement to supply aircraft to replace an aging tanker fleet followed in February 2022, Boeing announced a purchase of four in September 2022 with provisions for up to four more, and the record lists two delivered with four on order out of eight approved.

What the Numbers Say on Paper

If you plan payloads, use these published figures as fixed limits. Basic crew is three, made of two pilots and one boom operator, with 15 permanent seats for additional crew members including aeromedical evacuation crew members. The boom operator station stands just behind the flight deck in a crew compartment that also contains eight airline style crew seats, three crew rest bunks, a galley and a lavatory, and the aircraft can accommodate up to 15 crew members including jumpseats. Passenger capacity is listed as Federal Aviation Administration certified for up to 58 passengers in the rear fuselage using palletized seating similar to that of the C-17, with a galley and lavatory pallet and baggage on a cargo pallet, while Boeing states up to 114 passengers in contingency operations. In all cargo configuration it can carry up to 65,000 pounds of cargo across 18 pallets. In aeromedical evacuation configuration it can transport 54 patients including 24 on litters, with a crew of five made of two flight nurses and three medical technicians seated in the forward crew compartment during takeoff and landing. Fuel capacity is 212,299 pounds, described as 10 percent more than the KC-135, with maximum fuel available for transfer of 207,672 pounds. Boeing's current specifications list a length of 165 ft 10 in, a wingspan of 156 ft 1 in and a height of 52 ft 10 in, alongside an empty weight of 181,610 pounds and a maximum takeoff weight of 415,000 pounds. Power comes from two Pratt and Whitney PW4062 turbofan engines of 62,000 pounds thrust each. Boeing lists maximum airspeed as Mach 0.86, cruise speed 530 mph, range 6,385 nautical miles and global with in flight refueling, and service ceiling 40,100 ft. Survivability features are listed as infrared countermeasures and limited electronic warfare capabilities, with manual flight controls for unrestricted maneuverability through the flight envelope and a retractable ladder near the front landing gear for quick access from the ground.

The Wikipedia page titled Boeing KC-46 Pegasus presents the type as an American tanker and transport developed from the 767. You will find there development background, flight test history, design details, operational assignments and specifications with references. You can use it to check a date or figure quoted here and then return to planning references to see how boom and drogue procedures shape a mission.