What was found
LANDING GEAR WARNING HORN SOUNDED WITH THROTTLES RETARDED OR FLAPS EXTENDED WITH THE LANDING GEAR DOWN AND LOCKED (GREEN GEAR INDICATOR LIGHTS ILLUMINATED). WIRES TO THE THROTTLE POSITION SWITCHES WERE FOUND CHAFED BY THE CASTLE NUT AND COTTER PIN ON THE PITCH TRIM WHEEL AXLE BOLT. WIRES WERE REPAIRED AND REPOSITIONED AWAY FROM CASTLE NUT AND COTTER PIN. OPS CHECKED OK. AIRCRAFT TT: 3,709.7 HOURS.