ATC
Wiring Spec Error Led To Erroneous Warnings in EC225s

The UK Air Accidents Investigation Branch (AAIB) has explained why the emergency lubrication system sent a “failure” warning–while working nominally–to the crews of the two Eurocopter EC225s that ditched in the North Sea last year. Following a modification in 2010, the internal wiring of some switches was changed, “owing to an error in the specification [Eurocopter] sent to the switch manufacturer,” the AAIB wrote in a special bulletin released earlier this week.

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