NTSB Identification: BFO93LA074
Accident occurred Saturday, May 08, 1993 in TOWANDA, PA
Probable Cause Approval Date: 10/25/1993
Aircraft: CESSNA 172, registration: N3914F
Injuries: 2 Serious.

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

SHORTLY AFTER TAKEOFF, THE LEFT AILERON CONTROL CABLE FAILED IN THE VICINITY OF THE RIGHT AFT DOOR POST IN THE LOCATION OF A PULLEY. THE PILOT STATED IT TOOK FULL RIGHT AILERON TO KEEP THE AIRPLANE FROM ROLLING. THE AIRPLANE REMAINED IN THE TRAFFIC PATTERN TO LAND. DURING THE BASE LEG, THE PILOT APPLIED FULL FLAPS. THE AIRPLANE CONTINUED TO ROLL LEFT AND THE AILERONS DID NOT RESPOND TO CONTROL INPUTS. THE AIRPLANE IMPACTED THE GROUND LEFT WING DOWN AND CAME TO REST INVERTED. A METALLURGICAL EXAMINATION OF THE FAILED CABLE REVEALED THAT IT WAS CORRODED IN THE AREA OF THE FAILURE. THE AIRPLANE HAD RECEIVED A 100 HOUR ANNUAL INSPECTION ON OCTOBER 3, 1992. SINCE THE INSPECTION, THE AIRPLANE HAD FLOWN ABOUT ONE HOUR. THE AIRPLANE WAS TIED DOWN OUTSIDE FOR MOST OF THE TIME SINCE PURCHASED IN THE YEAR 1958. THE FAILED AILERON CONTROL CABLE WAS AN ORIGINAL CABLE.

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

THE FAILURE OF THE AILERON CONTROL CABLE WHICH RESULTED IN LOSS OF CONTROL IN FLIGHT.

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