What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Preliminary investigation indicates that student pilot landed hard and induced ground resonance (vibration), and instructor was too late for corrective action. Helicopter was destroyed. Landing gear dampners were inspected by manufacturer. The front dampners were found to be improperly serviced. The front dampners were last serviced by hummingbird rotorwing services, inc. on 01/12/2004, tt 5750.1. (-23 amendment) contributing factors: high ambient temperature of 85 degrees causing weakening of m/r dampners. Waiting for report from manufacturer.
As the FAA filed it
(-23) PRELIMINARY INVESTIGATION INDICATES THAT STUDENT PILOT LANDED HARD AND INDUCED GROUND RESONANCE (VIBRATION), AND INSTRUCTOR WAS TOO LATE FOR CORRECTIVE ACTION. HELICOPTER WAS DESTROYED. LANDING GEAR DAMPNERS WERE INSPECTED BY MANUFACTURER. THE FRONT DAMPNERS WERE FOUND TO BE IMPROPERLY SERVICED. THE FRONT DAMPNERS WERE LAST SERVICED BY HUMMINGBIRD ROTORWING SERVICES, INC. ON 01/12/2004, TT 5750.1. (-23 AMENDMENT) CONTRIBUTING FACTORS: HIGH AMBIENT TEMPERATURE OF 85 DEGREES CAUSING WEAKENING OF M/R DAMPNERS. WAITING FOR REPORT FROM MANUFACTURER.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.
Other reports on N61413 · 1
Matched to the same aircraft by N-number and date.