# Accident 20080928848009A: Beech C23, Duncan, OK, September 28, 2008

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 28, 2008, 15:50 local time
- Place: Duncan, OK
- Airport: Halliburton Field
- Damage: Substantial damage
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Location: 34.4708° N, 97.9597° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=34.4708&lon=-97.9597&mi=10
- Aircraft: N6714E, a cancelled registration (https://openairdocs.org/deregistered/N6714E-2011-01-07) (OpenAirDocs)
- Registry model: Beech C23 (registry code 1151242, https://openairdocs.org/model/beech-c23) (OpenAirDocs)
- Registry engine: Lycoming O&VO-360 series (registry code 41514, https://openairdocs.org/engine/lycoming-o-vo-360-series) (OpenAirDocs)
- Reported make and model: BEECH C23
- Reported engine: LYC O360A4K
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 113 total, 25 in this make and model, 7 in the last 90 days
- NTSB investigation: [NTSB DEN08LA163](https://openairdocs.org/ntsb/DEN08LA163) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20080928848009A

## Narrative

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

(-23) PILOT WAS AT CRUISE ALTITUDE OF 2500' AND REPORTED A LOSS OF POWER.  THE ENGINE STARTED RUNNING ROUGH AND EXHIBITED A SEVERE VIBRATION.  PILOT SHUT THE ENGINE DOWN AND SET UP FOR BEST GLIDE TO A DIRT FIELD.  ON LANDING, AIRCRAFT STRUCK A FENCE POST AND SHEARED THE NOSE GEAR OFF, COMING TO REST IN A VERTICAL POSITION ON THE NOSE.  DURING INSPECTION OF THE ENGINE AT THE SCENE, NOTED 6 QUARTS OF OIL REGISTERED ON THE DIPSTICK, AND THE CRANKSHAFT ROTATED FREELY.  FOUND SIGNIFICANT METAL CONTAMINATION IN THE ROCKER COVERS OF #2 AND #4 CYLINDERS, AND THE LOWER SPARK PLUGS FOR THOSE CYLINDERS WERE FULL OF OIL.  CONFIRMATION OF CAUSE FOR THE ENGINE FAILURE IS PENDING ENGINE TEARDOWN INSPECTION.

## 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 DEN08LA163](https://openairdocs.org/ntsb/DEN08LA163), Sep 28, 2008: Beech C23 (N6714E), Duncan, OK, substantial damage. Probable cause: A total loss of engine power due to the fatigue failure of the engine crankshaft. Contributing to the accident were the improper maintenance to the engine crankshaft, improper reassembly of the…

## Other reports on N6714E (2)

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

- [Accident 19820404007679A](https://openairdocs.org/incident/19820404007679A), Apr 4, 1982: Beech C23 (N6714E), Kenai, AK, Substantial damage. Lost directional control on landing roll. Veered off runway into a four-foot snowberm.
- [Incident 19801112086579I](https://openairdocs.org/incident/19801112086579I), Nov 12, 1980: Beech C23 (N6714E), Anchorage, AK, Minor damage. Engine mount failed from hard landing, allowing the nose gear to collapse.

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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