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Electrical Failure Caused Global Hawk Crash in Afghanistan

Posted on March 9, 2012 by The Editor

Photo: US Air Force

In-flight electrical failure caused a Northrop Grumman EQ-4 to crash in Afghanistan on 20 August 2011, says a newly-released accident investigation report. The aircraft crashed approximately 105 nm (195 km) northwest of Kandahar.
Specifically, an electrical connector to an unidentified line replacement unit (LRU) partially separated. This caused electrical damage inside the LRU, which cut power to the actuators that controlled the unmanned aircraft’s ailerons and spoilers. Within 1 min of the power failure, the aircraft lost control after hitting minor turbulence.
“The Board President also found, by a preponderance of the evidence, that LRU installation methods were a contributing factor in the mishap,” continues the report.