# Accident 20060702012939A: Nancng CJ6, Brewster, WA, July 2, 2006

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 2, 2006, 18:45 local time
- Place: Brewster, WA
- Airport: Anderson Field Airport
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 48.1047° N, 119.7300° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=48.1047&lon=-119.7300&mi=10
- Aircraft: N8120H, a cancelled registration (https://openairdocs.org/deregistered/N8120H-2017-04-18) (OpenAirDocs)
- Registry model: Nanchang China CJ-6 (registry code 05628VC, https://openairdocs.org/model/nanchang-china-cj-6) (OpenAirDocs)
- Registry engine: Amateur-built UNKNOWN ENG (registry code 99999, https://openairdocs.org/engine/amateur-built-unknown-eng) (OpenAirDocs)
- Reported make and model: NANCNG CJ6
- Reported engine: HOSAI HS6A
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 1,384 total, 65 in this make and model, 27 in the last 90 days
- NTSB investigation: [NTSB SEA06LA133](https://openairdocs.org/ntsb/SEA06LA133) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20060702012939A

## Narrative

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

(-23) DURING CRUISE FLIGHT, PILOT HEARD/FELT A COUPLE OF BANGS, ENGINE RPM INCREASED TO 4000 AND QUIT. PILOT ELECTED TO ATTEMPT LANDING AT ANDERSON FIELD (S97), BREWSTER, WA. A/C DID NOT CLEAR THE LAST ROW OF TREES IN ORCHARD, ABOUT 350 FEET WEST OF S97 RUNWAY 07. A/C SUSTAINED SUBSTANTIAL DAMAGE TO WINGS, LOWER FUSELAGE AND RH HORIZONTAL STABILIZER. THERE WAS NO POST ACCIDENT FIRE AND NO PERSONAL INJURIES SUSTAINED. A/C WAS HOISTED, LANDING GEAR EXTENDED, AND A/C TOWED TO RAMP AREA ON S97. POST ACCIDENT ENGINE TEAR-DOWN DETERMINED THAT THE PROPSHAFT REDUCTION PLANETARY GEAR SYSTEM SPLINES HAD FAILED DISCONNECTING THE CRANKSHAFT FROM THE PROPSHAFT.

## 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 SEA06LA133](https://openairdocs.org/ntsb/SEA06LA133), Jul 3, 2006: Nanchang China CJ-6 (N8120H), Brewster, WA, substantial damage. Probable cause: The failure of the engine's three planetary gears for undetermined reasons. A factor contributing to the accident was the tree orchard.

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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