What was found
AFTER TAKEOFF UPON GEAR UP SELECTION FELT VIBRATION IN NOSE WHEEL AREA, FOLLOWED BY STEERING INOPERATIVE. IMMEDIATELY AFTER LIFTOFF THEN GEAR DISAGREE WARNING, NOSE GEAR SHOWING YELLOW HASH MARKS. FOLLOWED GUIDANCE NON NORMAL CHPT 7 CHECKLIST. RETURNED, NORMAL LANDING WHEN GEAR WAS SELECTED DOWN, NOSE GEAR LOCKED IN POSITION NORMALLY. OK TO DEFER LG RETRACTION & EXTENSION SYS IAW MEL 32-30-1 IAW MOC 96247. PROCEDURES COMPLIED WITH, PLACARD INSTALLED & MM02 UPDATED. MEL 32-30-1 LG RETRACTION & EXTENSION SA 97287 REF LOG PAGE 3253663 ITEM 2 FOR STRUT REPACK, NLG. PERFORMED FUNCTIONAL RETRACTION OF LG IAW AMM 32-30-0 0-865-801. OPERATIONS CHECKED GOOD.