Interesting Engineering on MSN1d
Tracking system was off in US Army helicopter that collided with passenger jet: SenatorA US Army helicopter collided with an American Airlines jet near Ronald Reagan National Airport, marking the deadliest ...
A military helicopter was flying above the maximum altitude for its route when it collided with a passenger plane near ...
A Washington, D.C.-area helicopter pilot says Army Black Hawk was flying published route and on appropriate radio frequency.
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