# Incident 20150917018479I: Cessna TU206G, Madison, ME, September 17, 2015

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: September 17, 2015, 09:15 local time
- Place: Madison, ME
- Airport: Wesserunsett Lake
- Damage: No damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 44.8078° N, 69.8504° W: Placed by OpenAirDocs: center of Madison, ME, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.8078&lon=-69.8504&mi=10
- Aircraft: N9851Z (not matched to a registry record)
- Reported make and model: CESSNA TU206G
- Reported engine: CONT MOTOR TSIO-520 SER
- People aboard: 3
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport, commercial pilot, flight instructor
- Pilot flight hours: 3,257 total, 200 in this make and model, 35 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20150917018479I

## Narrative

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

EARLY ON 9/17/2015, CESSNA N9851Z, TU206G, S/N U20606701 (ON AMPHIBIOUS FLOATS) WAS IN CRUISE AT 5500 FT. NEAR MADISON, MAINE, WHEN THEY EXPERIENCED AN ENGINE PROBLEM. PILOT  INITIALLY NOTICED A PARTIAL LOSS OF POWER WITH REDUCED MANIFOLD PRESSURE. THE ENGINE OIL PRESSURE DROPPED OFF TO ZERO AND THEN THE ENGINE FAILED. HE DECLARED AN EMERGENCY ON 121.5 AND MADE A SUCCESSFUL EMERGENCY LANDING ON LAKE WESSERUNSETT. THREE PEOPLE ONBOARD, NO INJURIES AND NO DAMAGE TO THE AIRCRAFT. THE LEFT LOWER FUSELAGE WAS COVERED WITH OIL. INITIAL REMOVAL OF THE ENGINE COWL REVEALED A HOLE IN THE TOP OF THE LEFT CRANKCASE HALF, INDICATING A CONNECTING ROD FAILURE.

DURING THE SUBSEQUENT REMOVAL OF THE ENGINE, THE MECHANIC (^PRIVACY DATA OMITTED^) FOUND THE BRAIDED STEEL FLEX OIL LINE (P/N AE7010000E0310), WAS DAMAGED AND LEAKING BETWEEN THE ENGINE OIL PUMP AND THE TURBO CHARGER. IT APPEARS THAT ALL THE ENGINE OIL WAS PUMPED OUT THROUGH THE DAMAGED OIL LINE WHICH EVENTUALLY LED TO THE CONNECTING ROD FAILURE.

THIS CONTINENTAL ENGINE, MODEL TSIO 520 M8B, S/N 825658R HAS ONLY 680 HOURS OF OPERATION SINCE A FACTORY REMANUFACTURE IN NOVEMBER OF 2004.

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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