CHAPMAN, ME, USA
UNREG
Skytek SKYSEEKER MK II
THE AIRCRAFT WAS OBSERVED 'BOBBING UP AND DOWN' AS THE PILOT PERFORMED MANEUVERS DURING THE LOCAL PLEASURE FLIGHT. WITNESSES STATED THAT THEY HEARD A BANG AND SAW THE OUTBOARD SECTION OF THE RIGHT WING FOLD UP BEFORE THE AIRCRAFT DESCENDED INTO THE GROUND. THE NON-CERTIFICATED PILOT/AIRCRAFT OWNER HAD PERFORMED AN UNAUTHORIZED MODIFICATION TO THE WING STRUCTURE OF THE TWO-SEATER ULTRA-LIGHT AIRCRAFT. THE MANUFACTURER'S REPRESENTATIVE STATED THAT THEY HAD ADVISED AGAINST THE MODIFICATION AS IT WAS CONSIDERED UNSAFE AND WOULD WEAKEN THE STRUCTURE.
IN-FLIGHT FAILURE OF THE OUTBOARD SECTION OF THE WING, AND THE LOSS OF AIRCRAFT CONTROL. DUE TO THE UNAUTHORIZED STRUCTURAL MODIFICATION BY THE PILOT/OWNER.
Source: NTSB Aviation Accident Database
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