# Accident 20170612007029A: Cessna 172M, Bellport, NY, June 12, 2017

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 12, 2017, 06:13 local time
- Place: Bellport, NY
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 40.7506° N, 72.9483° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=40.7506&lon=-72.9483&mi=10
- Aircraft: N13306, a cancelled registration (https://openairdocs.org/deregistered/N13306-2019-09-06) (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-E2D
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Private pilot
- Pilot flight hours: 191 total
- NTSB investigation: [NTSB ERA17LA203](https://openairdocs.org/ntsb/ERA17LA203) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20170612007029A

## Narrative

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

WHILE IN NORMAL CRUISE ALONG THE SOUTH SHORE ENGINE SHUTDOWN PILOT ATTEMPTED A RESTART WHICH WAS NOT SUCCESSFUL. PILOT ELECTED TO PERFORM AN OFF AIRPORT LANDING ON A GOLF COURSE, DURING ROLL OUT THE AIRCRAFT RIGHT WING STRUCK A TREE AND THE AIRCRAFT WAS SUBSTANTIALLY DAMAGED. FURTHER INVESIGATION REVEALED CRANKSHAFT DRIVE GEAR HAS BACKED OFF THE CRANKSHAFT AND IS NOT DRIVING ACCESSORIES MOUNTED ON THE REAR OF THE ENGINE INCLUDING BOTH MAGNETOS. ENGINE SHUTDOWN CAUSED BY LACKING IGNITION AFTER THE CRANKSHAFT DRIVE GEAR CAME LOOSE.

## 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 ERA17LA203](https://openairdocs.org/ntsb/ERA17LA203), Jun 12, 2017: Cessna 172 (N13306), Suffolk, NY, substantial damage. Probable cause: A loss of preload to the crankshaft gear attachment bolt due to improper installation, which resulted in the fatigue failure of the crankshaft gear alignment dowel and led to the rotation of the…

## Other reports on N13306 (1)

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

- [Incident 19820512022409I](https://openairdocs.org/incident/19820512022409I), May 12, 1982: Cessna 172M (N13306), Riverhead, NY. Engine lost power. Landed in a potato field, valve keepers failed, caused power loss.

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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