What was found
DURING APPROACH TO LAND, GEAR HANDLE WAS MOVED TO DOWN POSITION. AN AMBER CAS GEAR DISAGREE L-R-N DISPLAYED AND NO MOVEMENT HEARD. ALL THREE GEAR POSITION INDICATORS WERE AMBER UP. A GO AROUND WAS INITIATED. GEAR HANDLE WAS AGAIN MOVED TO UP POSITION, AGAIN TO DOWN POSITION & THREE GREEN INDICATORS ILLUMINATED & NO CAS MESSAGE DISPLAYED. T/S MLG SYSTEM. CKECKED PCB NF206 & WIRING & PLN 58. NO DEFECTS FOUND. RECOMMEND TO REPLACE THE GEAR HANDLE MODULE. R & R GEAR HANDLE MODULE ASSY (UI020). REMOVED P/N H218B S/N 00690. INSTALLED AN OVERHAULED UNIT. P/N H218B S/N 00750. JACKED ACFT & ACCOMPLISHED MLG HANDLE MODULE POST MX CKS. ALL CHECKS NORMAL & NO DEFECTS. WORK DONE IAW AMM 32-30-30.