What was found
ON DEPARTURE AFTER POS RATE RETRACTED TO THE GEAR. SPEED N160 KNOTS NO ICE, IN LMC W/ALL INDICATIONS NORMAL. NOSE WHEEL REMAIN ON AND LOCKED AND GREEN. NEVER ONCE CHANGED TO DIAGONAL IN TRANSIT WHITE STRIPES. FOLLOWED BY GEAR DISAGREE WARNING NOSE DO. COMPLIED WITH FA-05-018B AND FIM 32-60-09 PROCEDURES. SUSPECT NR 3 SYS HYD RESERVIOR BYPASS AND POSSIBLE NLG SELECTOR VALVE FAILED. SEE AML 2210895 DISC 1 FOR HYD NR 3 SYS HYD RESERVOIR. SEE AML 2210894 DISC 2 FOR REMOVED AND REPLACED OF NLG SELECTOR VALVE. PERFROM MULTIPLE EXT / RET TEST IAW AMM 32-30-00. GEAR DISAGREE TESTS IAW AMM 32-30-00 AND OPS CHECK OF MANUAL RELEASE SYS IAW AMM 32-34-00 AND C/W LANDING GEAR HEALTH CHECK SEE AML 2210893 DISC 2. ALL TESTS NORMAL.