# Incident 20030805018379I: Boeing A75N1, Smithville, TN, August 5, 2003

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: August 5, 2003, 19:00 local time
- Place: Smithville, TN
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Location: 35.9584° N, 85.8214° W: Placed by OpenAirDocs: center of Smithville, TN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.9584&lon=-85.8214&mi=10
- Aircraft: N75359, registered now (https://openairdocs.org/aircraft/N75359) (OpenAirDocs)
- Registry model: Boeing A75N1(PT17) (registry code 1380134, https://openairdocs.org/model/boeing-a75n1-pt17) (OpenAirDocs)
- Registry engine: Lycoming R680 (registry code 41540, https://openairdocs.org/engine/lycoming-r680) (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Reported engine: LYC R68013
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 3,000 total, 300 in this make and model, 27 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20030805018379I

## Narrative

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

(-23) AIRCRAFT WAS FLYING IN A CRUISE CONFIGURATION WITH ONE PASSENGER. THE AIRCRAFT DEVELOPED A SEVERE VIBRATION, PILOT IMMEDIATELY REDUCED POWER AND TRIED TO MAKE PRIVATE GRASS LANDING AREA. THIS ATTEMPT CAUSED THE AIRCRAFT TO SLOW AND POWER WAS RE-APPLIED;AGAIN VIBRATION STARTED IMMEDIATELY. THIS ADDITIONAL VIBRATION CAUSED THE CRANKSHAFT TO SHEAR ALONG THE PROPELLER FLANGE AREA. PROPELLER AND CRANKSHAFT FLANGE WAS FOUND IN REMOTE AREA NOT FAR FROM EMERGENCY LANDING AREA. ENGINE IS BEING DISMANTLED TO FURTHER INVESTIGATE FAILURE. NO DISCREPANCIES WERE NOTED IN MAINTENANCE OF AIRCRAFT, ENGINE, OR PROPELLER SYSTEMS.

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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