Eurocopter AS 350/355/EC130 - Astar/Twinstar/Ecureuil
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor
Flight Crew Last 90 Days 80; Flight Crew Total 4950; Flight Crew Type 4950
Human-Machine Interface
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Aircraft Aircraft Damaged; Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft; Procedure; Human Factors
During autorotation training the student pilot undergoing AS350 training allowed the rotor speed to build to a point the high rotor alarm was triggered. Both the student and instructor observed a peak rotor of less than 430 RPM; however; the maintenance page of the VEMD read a peak of 458; which required a major inspection of components IAW the Airbus Maintenance Manual. Erroring on the side of safety it was decided to go with the worse case scenario and send the components in for inspection.
AS350 Instructor reported that during autorotation training; the rotor was oversped; requiring a major inspection for components.