AAIB report: Eurocopter EC135, serious incident during maintenance flight

, , Comments Off on AAIB report: Eurocopter EC135, serious incident during maintenance flight

G-POLA

During a maintenance flight to adjust speed, main rotor rpm varied between its maximum and minimum continuous limits. A mechanical stop within the speed control system had failed in such a way that main rotor speed could not be controlled accurately, putting the helicopter at significant risk. The pilot’s actions prevented rotor speed exceeding its limits and a more serious outcome. The manufacturer and operator have taken safety action regarding the conduct of airborne engine speed adjustments.

Read the report.

Published 24 October 2019

Rate this post

Revision History: