4 key takeaways from NTSB reports on deadly D.C. plane crash

The NTSB's preliminary report points to potential unreliable altitude readings from the helicopter and ATC communication issues as contributing factors in the crash. Inconsistent altitude ...
“We’ve determined that the existing separation distances between helicopter traffic operating on Route 4 and aircraft landing ...
Federal investigators looking for the cause of the January collision between a passenger jet and an Army helicopter near ...