Human error and damaged antennas caused the November 2000 crash of a prototype unmanned aerial vehicle owned by Northrop Grumman, the Navy said today. Announcing the company's findings from an internal accident investigation board review of the Nov. 4 crash, the Navy said the Vertical Take-off and Landing Tactical Unmanned Aerial Vehicle -- designated P1 -- featured antennas that were damaged during ground handling before they were installed. "Details of the report indicate that an incorrect signal was emitted from...
