The military helicopter that collided with a regional jet near Ronald Reagan Washington National Airport in a crash that killed all 67 people aboard both aircraft was a UH-60 Black Hawk, considered the “workhorse” of Army aviation.

The helicopter is a “utility tactical transport” aircraft — used for everything from air assault to relief operations — that the Army says it has relied on for every major operation around the world for more than four decades.

First introduced in the…