What was found
AFTER TAKEOFF AND GEAR RETRACTION, THE GEAR DOOR LIGHT STAYED ON. CYCLED GEAR, AND THE LIGHT EXTINGUISHED. REMOVED AND REPLACED MAIN GEAR UPLOCK OPERATED SEQUENCE VALVE IAW AMM 32-32-09-4. TWO HYRAULIC LINES ARE INOPERATIVE AND REPLACED. R & R THE MAIN GEAR SAFETY VALVE IAW 32-35-05-4, REPLACED THE FLEX HOSES ON THE RT MAIN GEAR UPLOCK OPERATED SEQUENCE VALVE IAW AMM 20-10-10-8 AND PERFORMED HYD SYSTEM BLEEDING AND CONTINUED TEST IAW AMM 32-32-09-4, AND AMM 32-35-05-4. NO LEAKS FOUND AND ALL TESTS ARE OK. COMPLIED WITH MAIN LDG RETRACTION/EXTENSION TESTED IAW AMM 32-32-00-5, ALL TESTED OK .