# Accident 20010531014509A: Scwzer G164B, Oroville, CA, May 31, 2001

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: May 31, 2001, 08:30 local time
- Place: Oroville, CA
- Airport: Oroville Municipal Airport
- Damage: No damage
- Operating rules: Rotorcraft external load (Part 133)
- Operator: NHGG
- Location: 39.7667° N, 121.9833° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=39.7667&lon=-121.9833&mi=10
- Aircraft: N6902K, a cancelled registration (https://openairdocs.org/deregistered/N6902K-2014-05-28) (OpenAirDocs)
- Registry model: Grumman Acft ENG Cor-Schweizer G-164B (registry code 3952802, https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (OpenAirDocs)
- Reported make and model: SCWZER G164B
- NTSB investigation: [NTSB LAX01LA195](https://openairdocs.org/ntsb/LAX01LA195) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20010531014509A

## Narrative

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

(-23) AIRCRAFT PROPELLER BEGAN TO VIBRATE VIOLENTLY. THE ENGINE WAS CUT AND PILOT ATTEMPTED AN EMERGENCY LANDING AT THE NEAREST AIRPORT.  APROXIMATELY 100 YARDS FROM RUNWAY THE AIRCRAFT WAS UNABLE TO MAINTAIN ALTITUDE RESULTING IN THE COLLISION WITH THE GROUND.  THE AIRCRAFT SUSTAINED MAJOR DAMAGE.  POST ACCIDENT INVESTIGATION REVEALED A BROKEN COUNTERWEIGHT PROPELLER PIN WHICH MAY HAVE CONTRIBUTED TO THE SEVERE VIBRATION.  FURTHER EXAMINATION OF PIN ALSO REVEALED EVIDENCE OF POSSIBLE CORROSION, WEAR AND LOOSENESS.

## 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 LAX01LA195](https://openairdocs.org/ntsb/LAX01LA195), May 31, 2001: Schweizer G-164B (N6902K), Butte City, CA, substantial damage. Probable cause: a fatigue failure of a propeller bolt.

## Other reports on N6902K (1)

Matched to the same aircraft by N-number and date.

- [Accident 20130308002869A](https://openairdocs.org/incident/20130308002869A), Mar 8, 2013: Grumman Acft Eng Cor-Schweizer G-164B (N6902K), Light, AR, Substantial damage. On March 8, 2013, at approximately 1600 CDT, N6902K, a Grumman aircraft, registered to hds, inc. and operated by a commercial pilot, attempted takeoff from an…

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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