What was found
UNSAFE GEAR INDICATION ON APPROACH WELL IN EXCESS OF 2 1/2 TIMES PER ADP MEL, INDICATING DOORS AND TAILSKID IN TRANSIT, REQUIRED GO AROUND. LEFT GEAR HANDLE DOWN AND DID NOT RECEIVE SAFE GEAR INDICATION UNTIL ESTABLISHED ON DOWNWIND, APPROX 5 MIN AFTER EXTENDING GEAR NEW WRI 29-11/0602 REACTIVATED CENTER ADP AS PER MEL PROCEDURE. PERFORMED CENTER HYD SYS OPERATIONAL TEST PER AMM 29-11-00-5. WITH PNEUMATIC PRESSURE AT 28 PSI HYDRAULIC PRESSURES WITH NO LOAD IS 3000 PSI AND WITH A LOAD PRESSURE DROPS TO 1800 PSI UNTIL LOAD IS GONE. COMPLETED FIM 29-11 FT 841. NO LEAKS FOUND. SUSPECTED ADP MODULATING VALVE. R & R ADP MODULATING VALVE OPS AND LK CK GOOD.