# Incident 20150816014659I: Beech V35, Mount Vernon, OH, August 16, 2015

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: August 16, 2015, 18:55 local time
- Place: Mount Vernon, OH
- Airport: Knox County
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 40.3289° N, 82.5264° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.3289&lon=-82.5264&mi=10
- Aircraft: N2059W, registered now (https://openairdocs.org/aircraft/N2059W) (OpenAirDocs)
- Registry model: Beech V35 (registry code 1151538, https://openairdocs.org/model/beech-v35) (OpenAirDocs)
- Registry engine: Continental IO-520 series (registry code 17032, https://openairdocs.org/engine/continental-io-520-series) (OpenAirDocs)
- Reported make and model: BEECH V35
- Reported engine: CONT MOTOR IO 520 SERIES
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- NTSB investigation: [NTSB CEN15IA365](https://openairdocs.org/ntsb/CEN15IA365) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20150816014659I

## Narrative

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

> WHILE CRUISING AT 8,000 FEET PILOT HEARD A "SUDDEN HIGH PITCH WHINE" TO ENGINE.

> PILOT NOTED A READING OF 3500 RPM ON DIGITAL TACH. PULLED CABLE TO REDUCE RPM WITH NO RESULTS.

> PILOT NOTIFIED COLUMBUS APPROACH OF EN EMERGENCY LANDING INTO 4I3.

> 1-2 MINUTES FROM TOUCH DOWN "A SUDDEN POP" AND WINDSHIELD FULL OF OIL.

> AFTER AIRCRAFT STOPPED MOVING PILOT LEARNED PROPELLER WAS MISSING FROM THE AIRCRAFT.

> NO APPARENT DAMAGE TO AIRFRAME, HEAVY DAMAGE TO ROTATING MASS IN ENGINE.

> MECHANIC REMOVED PROPELLER GOVERNOR AT REQUEST OF NTSB. FAA WITNESSED REMOVAL, METAL CHIPS/FILINGS NOTED IN THE GOVERNOR.

> THREE THREADED STUDS/BOLTS WITH NUTS AND WASHERS ATTACHED STILL IN CRANKSHAFT FLANGE.

> MECHANIC REMOVED THE ALTERNATOR WHICH REVEALED BROKEN PARTS NESTED IN THE NOSE CASE OF THE ENGINE.

## 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 CEN15IA365](https://openairdocs.org/ntsb/CEN15IA365), Aug 16, 2015: Beech V35 (N2059W), Mount Vernon, OH, incident, no damage. Probable cause: The loosening of the flyweight due to the installation of an improperly hardened flyweight carrier, which resulted in the overspeed of the propeller and engine and the subsequent in-flight separation…

## Other reports on N2059W (1)

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

- [Incident 20121023023949I](https://openairdocs.org/incident/20121023023949I), Oct 23, 2012: Beech V35 (N2059W), St. Cloud, MN, No damage. Pilot was cleared for ILS 13 to ktsc. He was left high on the approach by air traffic control due to radar coverage limitations in that area for radar…

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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