A drone pilot and an instructor at Grand Forks Air Force Base, N.D., failed to realize an RQ-4 was 4,000 feet too high as it started its final approach, leading the unmanned aerial system to overshoot the base and crash nearly seven miles away, according ...
A leak in a cracked oil line caused an RQ-4’s engine to fail during a ferry flight to the Middle East in June 2018, and because the operations aircrews did not properly plan divert airfields en route, the Global Hawk crashed into the sea near ...
