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AS350 instructor reported that during autorotation training; the rotor was oversped; requiring a major inspection for components.
| Attributes | |
| ACN | 1741961 |
| Time | |
| Date | 202004 |
| Local Time Of Day | 1201-1800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Eurocopter AS 350/355/EC130 - Astar/Twinstar/Ecureuil |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Final Approach |
| Route In Use | None |
| Flight Plan | None |
| Component | |
| Aircraft Component | Main Rotor Hub |
| Person 1 | |
| Function | Captain Instructor |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor |
| Experience | Flight Crew Last 90 Days 80 Flight Crew Total 4950 Flight Crew Type 4950 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
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 in accordance with 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.
Original NASA ASRS Text
Title: AS350 Instructor reported that during autorotation training; the rotor was oversped; requiring a major inspection for components.
Narrative: 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.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.