NTSB Identification: LAX86LA112.
The docket is stored on NTSB microfiche number 31201.
Nonscheduled 14 CFR
Accident occurred Friday, February 07, 1986 in FLAGSTAFF, AZ
Aircraft: CESSNA TU206G, registration: N5340X
Injuries: 6 Uninjured.

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

WHILE RETURNING FROM GRAND CANYON, AZ, 14 CFR 135 SIGHTSEEING FLT TO SCOTTSDALE, AZ, THE PLT REPORTED THE ACFT EXPERIENCED A POWER LOSS; ALL OTHER INSTRUMENT INDICATIONS WERE NORMAL. THE PLT ENRICHED THE MIXTURE AND CHANGED FUEL TANKS BUT TO NO AVAIL. THE PLT ELECTED TO DIVERT TO PULLIAM ARPT (FLG), FLAGSTAFF, AZ. AFTER TURNING THE ACFT TOWARDS FLG SMOKE BEGAN TO ENTER THE CABIN AREA FROM BENEATH THE INST PANEL. AFTER SECURING ALL ELECTRICAL POWER THE SMOKE DIMINISHED MOMENTARAILY. SHORTLY THEREAFTER THE ENGINE BEGAN TO LOSE MORE POWER AND THE CABIN BEGAN TO FILL UP WITH SMOKE. THE PILOT ELECTED TO LAND IN AN OPEN FLD. DURING THE LANDING ROLL, THE ACFT STRUCK 3 FENCE LINES AND A DIRT EMBANKMENT. EXAM OF THE ENGINE DSCLSD THE NO. 1 CYLINDER AFT ATTACH EXH STUDS HAD SHEARED OFF AND THE FWD STUDS ATTACH NUTS WERE LOOSE.

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

EXHAUST SYSTEM,STACK..LOOSE


Contributing Factors

OBJECT..FENCE


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN

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