AAR (NYSE: AIR) announces it has been selected by the U.S. Army to upgrade and overhaul Auxiliary Power Units (APUs) for its UH-60 Black Hawk helicopters. The work will be performed at AAR’s Aircraft Component Services facility in Garden City on Long Island.

The five-year contract, valued in excess of $23 million, will initially cover work on 60 APUs from the U.S. Army’s Redstone Arsenal in Huntsville, Ala., with a maximum of 520 APUs over the life of the contract.

“This award recognizes and builds on a core competency at AAR,” said Robert Sopp, AAR Executive Vice President. “We are honored to provide this important service to our nation’s military, and we look forward to providing these services for APUs on other military platforms in the near future.”

AAR also upgrades and overhauls the Jet Fuel Starter used on F-16 fighter aircraft. APUs, comparable to Jet Fuel Starters, are used on commercial and military aircraft to both power the aircraft on the ground and to start the main engines.