美空军原本预计采购84架MH-139A“灰狼”新型通用直升机，不仅削减至36架，目前进行的初期战术测评，也被美国国防部指出仍存在重大缺陷，尚未达到作战要求，该机测试进度可能延后。

美国空军MH-139A计划是近年来最重要的直升机采购计划之一。根据2018年美国空军与波音公司签订合同，美国空军将采购84架MH-139A“灰狼”直升机，合同总价值24亿美元，其中包括采购、培训和后勤服务等条款。第一批直升机预计将在未来几个月内开始取 ...

The UH-1N is capable of flight in instrument and nighttime conditions. The crew complement is normally three (pilot, co-pilot and flight engineer), but may be flown with fewer crewmembers ...

Two UH-1N Huey helicopters assigned to the 40th Helicopter Squadron and a MH-139A Grey Wolf helicopter assigned to the 550th Helicopter Squadron fly back to Malmstrom Air Force Base, Mont., Jan. 28, ...