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GA small aircraft helicopter had rotor drive failure just after takeoff. Automatic-rotated to off airport landing damaging tail rotor. Aircraft registration had expired.
| Attributes | |
| ACN | 160704 |
| Time | |
| Date | 199010 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : avx |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 150 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft |
| Flight Phase | climbout : takeoff |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 1200 flight time type : 50 |
| ASRS Report | 160704 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
10 seconds after takeoff the engine RPM increased severely, with a decrease in rotor RPM. I immediately entered automatic-rotation to maintain the rotor RPM, and made an emergency landing on a slope. Due to the angle of the slope the tail rotor hit the ground. This is the only damage. I know the owner of the aircraft, and have flown this aircraft several times before. Unfortunately I flew west/O knowing the temporary registration had been expired for 3 days.
Original NASA ASRS Text
Title: GA SMA HELICOPTER HAD ROTOR DRIVE FAILURE JUST AFTER TKOF. AUTO-ROTATED TO OFF ARPT LNDG DAMAGING TAIL ROTOR. ACFT REGISTRATION HAD EXPIRED.
Narrative: 10 SECS AFTER TKOF THE ENG RPM INCREASED SEVERELY, WITH A DECREASE IN ROTOR RPM. I IMMEDIATELY ENTERED AUTO-ROTATION TO MAINTAIN THE ROTOR RPM, AND MADE AN EMER LNDG ON A SLOPE. DUE TO THE ANGLE OF THE SLOPE THE TAIL ROTOR HIT THE GND. THIS IS THE ONLY DAMAGE. I KNOW THE OWNER OF THE ACFT, AND HAVE FLOWN THIS ACFT SEVERAL TIMES BEFORE. UNFORTUNATELY I FLEW W/O KNOWING THE TEMPORARY REGISTRATION HAD BEEN EXPIRED FOR 3 DAYS.
Data retrieved from NASA's ASRS site as of July 2007 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.