Equipment malfunction, dropped messages looked at by NTSB in midair crash near D.C.
The National Transportation Safety Board is looking into flight data discrepancies, potential altimeter malfunctions and a ...
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Investigators Say Black Hawk Altitude Gauges May Have Been Inaccurate Prior to Deadly DC Airplane Collision
NTSB Chair Jennifer Homendy said the Black Hawk helicopter was at approximately 278 feet altitude at the time of the crash, ...