AAIB investigation to Bombardier CL600-2B16, N664D

Landing in abnormal configuration, Biggin Hill Airport, 26 March 2014.

Summary:

A post-maintenance check flight, requiring an airborne check of the air-driven generator (ADG), involved placing the aircraft in an emergency electrical configuration. The check was completed successfully, but the pilots did not return the aircraft to the normal electrical configuration. Consequently, several aircraft systems remained inoperative, including flaps, ground spoilers, anti-skid and nosewheel steering. The aircraft landed in this configuration and the pilots experienced difficulty stopping it on the runway. All four main tyres deflated, causing damage to the main wheels and brake units.

Download report:

Bombardier CL600-2B16 N664D 10-14.pdf

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