NTSB Identification: LAX82FVG22
14 CFR Part 91: General Aviation
Accident occurred Sunday, May 02, 1982 in LAKEPORT, CA
Probable Cause Approval Date: 05/02/1983
Aircraft: OSPREY 2, registration: N58ED
Injuries: 1 Minor.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE PILOT REPORTED THAT AFTER TAKEOFF, HE MADE A FEW TURNS AND THEN HEADED DOWNWIND FOR A LANDING WHEN HE LOST THE CONTROL OF AN AILERON. HE REPORTED THAT HE ENCOUNTERED A BAD VIBRATION, SO HE CUT THE POWER AND BROUGHT THE PLANE INTO A SMALL FIELD BY CROSSING UNDER HIGH POWERLINES. DURING THE LANDING, THE LEFT WING HIT SMUDGE POTS AND THE AIRCRAFT CARTWHEELED. AN INVESTIGATION REVEALED THAT THE LEFT AILERON, PUSH-PULL, ROD ASSEMBLY HAD PULLED LOOSE FROM THE ATTACHING SLEEVE AT THE BELL CRANK ATTACH POINT. THE ROD HAD BEEN BRAISED INTO THE SLEEVE RATHER THAN BEING RIVETED. THIS FAILURE RESULTED IN LOSS OF HALF OF THE AILERON AUTHORITY. THE PILOT WAS THE OWNER AND BUILDER OF THE AIRCRAFT.

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

FLT CONTROL SYST,AILERON CONTROL..DISCONNECTED

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

MAINTENANCE,INSTALLATION..IMPROPER..OTHER MAINTENANCE PERSONNEL



Contributing Factors

TERRAIN CONDITION..HIGH OBSTRUCTION(S)


Contributing Factors

OBJECT

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