History of the Flight
On 23 May 2025 at 1820 UTC, a Piper PA-22-108 (registration G-ARNE) departed from Old Buckenham Airfield, Norfolk, on a private flight with one pilot and no passengers. During the initial climb after takeoff, at approximately 400 ft, the pilot heard a 'clunk' and felt a jolt. Observing that the outboard end of the left aileron had partially detached from the wing, the pilot declared a MAYDAY. After climbing steadily and making gentle control inputs, he determined that he could manoeuvre using mainly rudder inputs. He flew a wide circuit to avoid populated areas and minimise aileron control inputs, then landed successfully on Runway 07. The pilot, aged 55, held a Private Pilot's Licence and had 293 hours of flying experience, with 36 hours on type; his last 90 days included 3 hours, and last 28 days none. No injuries were reported.
Aircraft Assessment and Damage
The aircraft, manufactured in 1961 (serial no: 22-8502), was powered by one Lycoming O-235-C1B piston engine. Examination revealed that the left outboard aileron hinge clevis pin was missing. The hinge bracket where the pin fitted was worn. On the right aileron, the equivalent clevis pin was a non-standard part with a larger diameter than the specified part (AN394-41). The right hinge bracket was also worn. The left aileron was partly detached from the wing.
Maintenance Findings
The maintenance history did not show when the clevis pin had been replaced; the non-standard part was considered to pre-date the current ownership. Both hinge brackets exhibited wear, and the left clevis pin was absent at the time of inspection.