Six test aircraft have now completed more than 3,700 flight hours and supplied more than four million pounds of fuel in flight to receiver aircraft. Phase III receiver certification testing will be conducted by the Air Force at Edwards Air Force Base in 2019, Boeing announced.
Wright-Patterson Air Force base houses the KC-46 Pegasus aerial refueling tanker program.
The development of the KC-46 has seen challenges in recent years. In 2017, the Air Force marked the KC-46 Pegasus aerial refueling tanker with three “deficiency reports” that have raised concerns, according to the service branch. However, the Air Force awarded Boeing a $2.9 billion contract in September for the production of another lot of KC-46 tankers.
The KC-46 can haul more than 212,000 pounds of fuel and can be configured to carry a maximum of 114 passengers, or 65 patients on an aeromedical evacuation mission.