What was found
GEAR DISAGREE WARNING WHEN WE MOVED THE GEAR HANDLE TO THE UP POSITION ON THE NOSE GEAR. THE MAIN GEARS CAME UP OK. FLT CREW STATED UPON ARRIVAL, NLG AND MLG COATED WITH ICE. MDC REPORTED B1-007427, NG LK NR 1 SENSOR PX24, B1-007432, NG LK NR 2 SENSOR PX44, BOTH OUT OF RIG. PLACED ACFT ON JACKS AND PERFORMED SEVERAL GEAR RETRACTION/EXTENSION CYCLES IAW AMM 32-30-00. VERIFIED LANDING GEAR PROXIMITY SENSOR RIG AND HEALTH CHECK GOOD IAW AMM 32-61-00 FOR ALL SENSORS. NO DEFECTS NOTED TO SENSORS. GEAR RETRACT/EXTENSION CHECKS GOOD, REF AMM 32-30-00.