# Accident 20171013024369A: Williams Helicopter Corp UH-1H, Arbuckle, CA, October 13, 2017

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 13, 2017, 09:56 local time
- Place: Arbuckle, CA
- Damage: Substantial damage
- Phase of flight: Landing: Touchdown
- Operating rules: Agricultural (Part 137)
- Location: 39.0519° N, 122.0906° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=39.0519&lon=-122.0906&mi=10
- Aircraft: N247PV, registered now (https://openairdocs.org/aircraft/N247PV) (OpenAirDocs)
- Registry model: Williams Helicopter UH-1H (registry code 9790870, https://openairdocs.org/model/williams-helicopter-uh-1h) (OpenAirDocs)
- Registry engine: Lycoming T53-L-13 (registry code 41551, https://openairdocs.org/engine/lycoming-t53-l-13) (OpenAirDocs)
- Reported make and model: WILLIAMS HELICOPTER CORP UH-1H
- Reported engine: LYCOMING T53-L-13
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot
- Pilot flight hours: 15,000 total, 10,000 in this make and model, 100 in the last 90 days
- NTSB investigation: [NTSB WPR18LA004](https://openairdocs.org/ntsb/WPR18LA004) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20171013024369A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON OCTOBER 13, 2017 AT APPROXIMATELY 1000 HOURS, UH1 AIRCRAFT N247PV EXPERIENCED A COLLECTIVE SURGE WHILE ATTEMPTING TO RE-POSITION TO A LANDING CART FROM THE BASE WASH RACK.

THE PILOT^/OWNER^ STATED THAT WHEN THE COLLECTIVE CONTROL SURGED UPWARD THAT HE ATTEMPTED TO LOWER THE COLLECTIVE AND STRUCK THE LANDING CART WITH THE FRONT END OF THE SKIDS CAUSING THEM TO FRACTURE APPROXIMATELY 18 INCHES FROM THE FRONT TIPS.

THE PILOT THEN ATTEMPTED TO COMPLETE THE LANDING TO THE CART BUT DUE TO THE LACK OF COLLECTIVE CONTROL HE SAT THE AIRCRAFT DOWN TOO FAR TO THE RIGHT OF THE CART CAUSING THE RIGHT AIRCRAFT SKID TO SLIP OFF OF THE CART EDGE RESULTING IN THE AIRCRAFT ROLLING ONTO IT'S RIGHT SIDE.

THE PILOT COMPLETED AN EMERGENCY SHUTDOWN OF THE AIRCRAFT AFTER SUSTAINING SUBSTANTIAL DAMAGE TO THE MAIN ROTOR, TAIL ROTOR, TRANSMISSION AND AIRFRAME. FLYING DEBRIS FROM THE ACCIDENT AIRCRAFT ALSO DAMAGED TWO OF THE OWNERS FIXED WING AIRCRAFT THAT WERE PARKED NEARBY.

THE INVESTIGATING INSPECTOR FOUND THE PILOT TO BE FORTHCOMING, COOPERATIVE, AND TO HAVE A COMPLIANT ATTITUDE. A SEARCH OF THE FAA'S DATABASES DID NOT DISCLOSE ANY PREVIOUS VIOLATIONS, ACCIDENT, OR INCIDENT HISTORY.

THIS REPORT MAY BE REVISED WITH ADDITIONAL EVIDENCE.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR18LA004](https://openairdocs.org/ntsb/WPR18LA004), Oct 13, 2017: Western International Avia UH 1H (N247PV), Arbuckle, CA, substantial damage. Probable cause: A collective control malfunction for reasons that could not be determined.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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