# Accident 19980517009779A: Scwzer G164D, Richvale, CA, May 17, 1998

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: May 17, 1998, 11:30 local time
- Place: Richvale, CA
- Airport: Thompson
- Damage: Destroyed
- Phase of flight: Forced/Precautionary Landing
- Operating rules: Agricultural (Part 137)
- Operator: NIEG
- Location: 39.4792° N, 121.8397° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.4792&lon=-121.8397&mi=10
- Aircraft: N8177K, a cancelled registration (https://openairdocs.org/deregistered/N8177K-1998-08-10) (OpenAirDocs)
- Registry model: Gulfstream-Schweizer A/C GULFSTREAM AM G-164D (registry code 3979908, https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164d) (OpenAirDocs)
- Reported make and model: SCWZER G164D
- Reported engine: PWA PT6A34AG
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 37,000 total, 8,000 in this make and model, 50 in the last 90 days
- NTSB investigation: [NTSB LAX98LA162](https://openairdocs.org/ntsb/LAX98LA162) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19980517009779A

## Narrative

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

ON TAKEOFF, THE PILOT EXPERIENCED A LOSS OF ENGINE POWER AND COMPLETED A FORCED LANDING ON SOFT GROUND AND THE AIRCRAFT NOSED OVER. DURING THE POST ACCIDENT TEARDOWN INSPECTION OF THE ENGINE, IT WAS NOTED THAT FOUR COMPRESSOR/TURBINE BLADES HAD FAILED AT THE BLADE/BUTT INTERFACE. THE FAILED BLADES WERE NOT STANDARD MANUFACTURER'S REPLACEMENT PARTS.S

## 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 LAX98LA162](https://openairdocs.org/ntsb/LAX98LA162), May 17, 1998: Schweizer G164D (N8177K), Richvale, CA, destroyed. Probable cause: The separation of four compressor/turbine blades resulting in a sudden loss of engine power with a subsequent forced landing into unsuitable terrain.

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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