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Md-500 helicopter pilot experiences violent high frequency shaking during cruise flight at 2;000 feet. The ability to turn left or right is impaired but the reporter is able to line up and land safely on a dirt road.
| Attributes | |
| ACN | 1259234 |
| Time | |
| Date | 201505 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | MD Helicopter 500/C/D/E/L |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Cruise |
| Flight Plan | None |
| Component | |
| Aircraft Component | Helicopter Control Systems |
| Person 1 | |
| Function | Captain Single Pilot |
| Qualification | Flight Crew Commercial Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 240 Flight Crew Total 3500 Flight Crew Type 400 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Cruise over the bay near the sand bar when violent high frequency shaking started.I directed the aircraft toward the shore line in a power on autorotation and maintained speed to locate safe landing place. I located a dirt road and tried to turn left into the wind but had no left turn capability so I tried right and had a little so used cyclic and the little right I had to line up with the road as I slightly turned and came in with the autorotation; near the end I was able to use slight power on for touchdown. No injuries to passengers or the aircraft and landing was uneventful.
Original NASA ASRS Text
Title: MD-500 helicopter pilot experiences violent high frequency shaking during cruise flight at 2;000 feet. The ability to turn left or right is impaired but the reporter is able to line up and land safely on a dirt road.
Narrative: Cruise over the Bay near the sand bar when violent high frequency shaking started.I directed the aircraft toward the shore line in a power on autorotation and maintained speed to locate safe landing place. I located a dirt road and tried to turn left into the wind but had no left turn capability so I tried right and had a little so used cyclic and the little right I had to line up with the road as I slightly turned and came in with the autorotation; near the end I was able to use slight power on for touchdown. No injuries to passengers or the aircraft and landing was uneventful.
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.