# Incident 20141129023599I: Cessna 207, Bethel, AK, November 29, 2014 - Type: FAA incident report (Accident/Incident Data System), as reported - Date: November 29, 2014, 08:35 local time - Place: Bethel, AK - Airport: Bethel - Damage: No damage - Phase of flight: Cruise/Level Flight - Operating rules: Air taxi and commuter (Part 135) - Operator: YAAA - Location: 60.7922° N, 161.7558° W: Placed by OpenAirDocs: center of Bethel, AK, within about 6 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=60.7922&lon=-161.7558&mi=10 - Aircraft: N1653U, a cancelled registration (https://openairdocs.org/deregistered/N1653U-2017-10-30) (OpenAirDocs) - Registry model: Cessna 207 (registry code 2073602, https://openairdocs.org/model/cessna-207) (OpenAirDocs) - Registry engine: Continental IO-520 series (registry code 17032, https://openairdocs.org/engine/continental-io-520-series) (OpenAirDocs) - Reported make and model: CESSNA 207 - Reported engine: CONT MOTOR IO 520 SERIES - People aboard: 1 - Fatal injuries: 0 - Other injuries: 0 - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20141129023599I ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. ON NOVEMBER 29, 2014, N1653U DEPARTED BETHEL FOR ATT, KUK, AND NUP. AFTER DEPARTING, LEVELING OFF FOR CRUISE, SETTING CRUISE POWER, AND LEAVING BETHEL AIRSPACE, THE PIC NOTICED AN UNUSUAL VIBRATION. THE PIC WAS ABLE TO DETERMINE THAT THE #3 CYLINDER WASN?T PRODUCING POWER BY USING THE INSIGHT G1 GUAGE. AFTER NOTIFYING COMPANY AND BETHEL ATC THAT HE NEEDED TO RETURN, THE PIC TURNED BACK TO BETHEL. AFTER HE TURNED FOR BETHEL, THE VIBRATION GOT CONSIDERABLY WORSE, THE PIC SAW ON INSIGHT GAUGE THAT THE #5 CYLINDER HAD LOST POWER ALSO. THE PIC THEN DECLARED AN EMERGENCY WITH THE BETHEL ATC TOWER AND LANDED WITHOUT INCIDENT. YUTE AIR?S MAINTENANCE PERSONNEL TOOK A LOOK AT THE #3 AND #5 CYLINDERS AND FOUND THEM LOOSE ON THE CASE. IT WAS DETERMINED THAT THE ENGINE SHOULD NOT BE REPAIRED. THE DOM DECIDED TO GROUND THE AIRCRAFT INDEFINITELY UNTIL AN OVERHAULED ENGINE CAN BE INSTALLED. PRIOR TO THAT FLIGHT, THE ENGINE INSTALLED ON N1653U WAS 102.7 HOURS AWAY FROM TBO. ## Other reports on N1653U (3) Matched to the same aircraft by N-number and date. - [Accident 20150530008709A](https://openairdocs.org/incident/20150530008709A), May 30, 2015: Cessna 207 (N1653U), Bethel, AK, Substantial damage, 1 fatal. N1653U descended through a stand of trees on a heading of approximately north, leaving a ground scar at the edge of the river. The engine was found… - [Incident 20140227002249I](https://openairdocs.org/incident/20140227002249I), Feb 27, 2014: Cessna 207 (N1653U), Nightmute, AK, Minor damage. In cruise flight at an altitude below 3000 feet, the engine started to run rough. Completed emergency checklist, mixture full rich, prop and throttle both… - [Incident 20091118051519I](https://openairdocs.org/incident/20091118051519I), Nov 18, 2009: Cessna 207 (N1653U), Tuntutuliak, AK, Minor damage. Pilot verified load manifest, fuel, weather clearances, engine oil level, passenger loading, and departed for kipnuk, Alaska. Approximantly 30 minutes into… 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.