Boeing is offering its MH-139 helicopter to replace the U.S. Air Force’s aging UH-1N “Huey” helicopter fleet, according to a Boeing news release. The UH-1N Replacement Program plans to replace the old Hueys with up to 84 new helicopters.

Boeing announced its offering at the Air Force Association Air Warfare Symposium in Orlando, Florida, last week. The Air Force still operates more than 60 Hueys to transport security forces protecting intercontinental ballistic missile sites as well as transporting government and military personnel in the national capitol region, but has been looking to replace the helicopters for more than a decade.

The MH-139 is based on the Leonardo Helicopters (formerly Agusta Westland) AW139. According to Boeing, some 900 AW139s are in service with more than 250 governments, militaries, and companies across the world. More than 250 of the helicopters have been assembled and delivered from Philadelphia.

“This Northeast Philadelphia-built aircraft is sized to meet U.S. Air Force requirements and offers more than $1 billion in acquisition and lifecycle expense savings over 30 years when compared to competitor aircraft,” said David Koopersmith, vice president and general manager, Boeing Vertical Lift.

“The Huey replacement is of vital importance to the Air Force, and the MH-139 is the right solution for those missions,” said Judy Fedder, director of Global Sales & Marketing, Boeing Integrated Logistics, and a retired U.S. Air Force lieutenant general. “The fact that the AW139 is being built today on an active production line will speed it to meet the time-critical demand following the competition.”