What was found
ON DESCENT, DUE TO RNWY CHANGE, EXTENDED LG AT 235 KTS, ONCE ON DESCENT RETRACTED GEAR AT 220 KTS, BOTH MAIN GEAR INDICATED UNSAFE, UPON RETRACTION EXTENDED GEAR & GOT 3 GREEN. JACKED ACFT IAW AMM 07-11-00-2. PERFORMED MLG PROXIMITY SENSORS & TARGET TEST IAW AMM 32-61-15-5. ALL READINGS WITHIN LIMITS, GEAR EXTENDED & RETRACTED. PERFORMED LG EXTENSION & RETRACTION TIMED ACTUATION TEST IAW AMM 32-30-00-5. RETRACT TIME WAS 10 SECONDS WITH HYD OPERATIONS CHECKED GOOD. RETRACTED GEAR 8 TIMES, NO DISCREPANCIES NOTED. LANDING GEAR INDICATION OPERATIONS CHECKED GOOD. PERFORMED DETAILED VISUAL INSPECTION OF MLG PROXIMITY SENSORS. NO FAULTS FOUND.