NTSB Identification: SEA87IA004.
The docket is stored on NTSB microfiche number 31519.
Scheduled 14 CFR
Incident occurred Saturday, October 04, 1986 in EVERETT, WA
Aircraft: CESSNA 402C, registration: N2651Y
Injuries: 5 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

WHILE ENROUTE FROM SEATTLE TO BELLINGHAM ON A REGULARLY SCHEDULED PASSENGER COMMUTER FLIGHT THE LEFT ENGINE NUMBER 3 EXHAUST RISER BURNED THROUGH. THE PILOT VISUALLY DETECTED A DISCOLORATION ON THE LEFT ENGINE NACELLE INFLIGHT BUT WAS UNABLE TO EXECUTE A PRECAUTIONARY LANDING BEFORE A BURN THROUGH OF THE ENGINE COWL OCCURRED. AN UNEVENTFUL LANDING AT EVERETT, WASHINGTON, WAS ACCOMPLISHED. THE COMPONENT HAD APPROXIMATELY 4000 HOURS SINCE ITS LAST OVERHAUL AND 70 HOURS SINCE ITS LAST 100 HOUR INSPECTION.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

EXHAUST SYSTEM,MANIFOLD/PIPE..BURNED

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