NTSB Identification: ATL86LA073.
The docket is stored on NTSB microfiche number 30819.
Accident occurred Tuesday, February 11, 1986 in COLUMBIA, TN
Aircraft: CESSNA U206B, registration: N3403L
Injuries: 1 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.

SOON AFTER DEPARTURE THE PLT EXPERIENCED A SEVERE VIBRATION THROUGHOUT THE ACFT. ENG PWR WAS RETARDED AND THE VIBRATION SUBSIDED. THE PLT THEN NOTICED AILERON CONTROL PROBLEMS AND NOTICED THE LEFT WING TIP WAS MOVING UP AND DOWN. AN EMERGENCY LANDING WAS MADE IN A FIELD. INVESTIGATION REVEALED BOTH AILERONS HAD OVERTRAVELED AND WERE BENT. THE LEFT WING MAIN STRUCTURE WAS FOUND FRACTURED BUT HAD NOT SEPARATED. LINE SERVICE PERSONNEL REPORTED THAT THE ACFT DEPARTED WITH ONE HALF INCH OF SOLID ICE ON THE TOP SURFACES OF THE WING.

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

ICE/FROST REMOVAL FROM AIRCRAFT..DISREGARDED..PILOT IN COMMAND


Contributing Factors

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND



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