# Accident 20131215024619A: Cessna 172M, Bethel, AK, December 15, 2013

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: December 15, 2013, 17:23 local time
- Place: Bethel, AK
- Damage: Substantial damage
- Phase of flight: Takeoff: Departure Roll
- Operating rules: Air taxi and commuter (Part 135)
- Operator: YAAA
- Location: 60.7822° N, 161.8500° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=60.7822&lon=-161.8500&mi=10
- Aircraft: N20109, a cancelled registration (https://openairdocs.org/deregistered/N20109-2014-12-12) (OpenAirDocs)
- Registry model: Cessna 172M (registry code 2072418, https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: CESSNA 172M
- Reported engine: LYCOMING 0-320 SERIES
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Commercial pilot, flight instructor, private pilot
- Pilot flight hours: 1,407 total, 338 in this make and model, 175 in the last 90 days
- NTSB investigation: [NTSB ANC14LA011](https://openairdocs.org/ntsb/ANC14LA011) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20131215024619A

## Narrative

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

ON DECEMBER 15, 2013, AT 1730 ALASKA DAYLIGHT TIME, A CESSNA 172, N20109, LOST POWER DURING TAKEOFF AND OVERSHOT THE RUNWAY OVERRUN AREA AND THROUGH THE OUTER BORDER FENCE AT THE BETHEL AIRPORT, BETHEL, ALASKA.  THE NTSB RELEASED THE AIRCRAFT FOR RECOVERY TO YUTE AIR, AND THE AIRCRAFT WAS PICKED UP AND MOVED TO THE COMPANY?S MAINTENANCE FACILITY.

ON DECEMBER 16, 2013 AT APPROXIMATELY 1030 LOCAL, I CONDUCTED A WITNESS INTERVIEW WITH THE PIC AND THEN VISUALLY INSPECTED THE AIRCRAFT N20109.  A REVIEW OF PHOTOS TAKEN APPROXIMATELY 1 HOUR AFTER THE ACCIDENT CLEARLY SHOW THE LEFT HAND FUEL TANK CAP MISSING, THE FUEL SELECTOR IN THE OFF POSITION AND THE AIRCRAFT COVERED WITH ICE.

THE PROPELLER SPINNER WAS FOUND SEPARATED FROM THE ENGINE AND EXHIBITED A LARGE FLAT SPOT ON ONE SIDE WITH NO SIGNATURES OF ROTATION.  AN INSPECTION OF THE AIRCRAFTS FUEL SYSTEM DID NOT REVEAL ANY ANOMALIES, BUT WHEN THE FUSELAGE FUEL SUMP AND GASCOLATOR WERE CHECKED FOR FUEL WITH THE SELECTOR IN THE OFF POSITION THEY WERE EMPTY.  WHEN THE FUEL SELECTOR WAS MOVED TO THE BOTH POSITION, BOTH THE GASCOLATOR AND FUSELAGE SUMP EXHIBITED FUEL.

THE PROPELLER ASSEMBLY WAS REMOVED FROM THE AIRCRAFT AND THE CRANKSHAFT WAS FOUND TO BE .0002 OUT OF ROUND WITH A DIAL GAUGE.  A SLAVE PROPELLER ASSEMBLY WAS REINSTALLED ON THE AIRCRAFT AND AN ENGINE RUN WAS PERFORMED.  WITH JUST REPLACING THE PROPELLER ASSEMBLY AND USING THE SAME FUEL THAT WAS ONBOARD THE AIRCRAFT AT THE TIME OF THE ACCIDENT, THE ENGINE STARTED UP AND RAN WITHOUT STUMBLING OR HESITATION.

## 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 ANC14LA011](https://openairdocs.org/ntsb/ANC14LA011), Dec 15, 2013: Cessna 172M (N20109), Bethel, AK, substantial damage. Probable cause: The pilot’s decision to abort the takeoff with insufficient runway remaining, which resulted in a runway excursion.

## Other reports on N20109 (2)

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

- [Incident 20121125026029I](https://openairdocs.org/incident/20121125026029I), Nov 25, 2012: Cessna 172M (N20109), Bethel, AK, Minor damage. Aircraft departed nunapitchuk, Alaska for a flight to Bethel, Alaska. Cruise altitude was around 1200-1500 feet AGL, engine RPM around 2500. About 10 miles…
- [Accident 20100119026049A](https://openairdocs.org/incident/20100119026049A), Jan 19, 2010: Cessna 172M (N20109), Bethel, AK, Substantial damage. The aircraft was attempting a soft-field takeoff using rwy 1L at the Bethel Airport when the aircraft yawed and banked violently to the left just as the nose…

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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