What was found
GEAR DISAGREE ON FINAL THREE GEAR LIGHTS GEAR WARNING LIGHT WENT OUT ON THE GND PER INBOUND CREW - WHEN GEAR SELECTED DOWN - ALL THREE GEAR DOWN GREEN LIGHTS AND GEAR DISAGREE RED LIGHT. RETRACTED GEAR AND CYCLED AGAIN. ON 2ND ATTEMPT SAME RESULT. USED GEAR CANCEL OVERRIDE & LANDED. ONCE WEIGHT ON WHEELS ALL DISAGREE LIGHTS OUT & GEAR INDS NORMAL. ACCOMPLISHED BITE OF PSEU IAW FIM 32-09 FAULT TREE 804. FAULT CODES 421,422,423,424 DISPLAYED. NOTE NO EICAS MESG DISPLAYED ON ARRIVAL. ALL FAULTS INDICATED MLG LEVER MODULE (M937). CONTINUED FROM AMM 32-31-01-404-011 STEP D.10.C TO STEP. D.10.J. HANDLE LOCKED WHEN NEEDED & 3 GREEN LIGHTS LIGHT UP WHEN NEEDED. CONITUE ON STEP D.11 REMOVED & INSTALLED NEW CONTROL LEVER MODULE FOR MLG IAW AMM 32-31-01-404-011 TO STEP D (10) (C). ACCOMPLISHED ALL STEPS ON LDG MODUAL CONTROL LEVER INSTALLATION TEST UP TO ALTERNATE GEAR EXTENSION TEST. AMM 32-31-01-404-011 UP TO STEP 3 D (12). COMPLETED GROUND PROX TEST STEP D(13-17) OPS CHKD GOOD. PERFORMED GROUND PROXIMITY TEST STEP D(13-17) OPS CHECK GOOD IAW AMM 34-46-00.