What was found
UPON TAKEOFF LG RETRACT NOSE DOOR OPEN, LANDING GEAR DISAGREE, NOSE WHEEL STEERING INOPERATIVE. NOSE DOOR OPEN SOUND WAS HEARD FROM COCKPIT, LANDING GEAR MAINS WERE RETRACTED & NOSE GEAR UNSAFE. RAN QRH NOSE GEAR DISAGREEMENT SUCCESSFULLY GOT A 3 GEAR. COMPLIED WITH PA 05-018 REV K SCENARIO 1. SERVICED NOSE GEAR STRUT IAW AMM 12-12-32-601-803. PERFORMED FUNCTIONAL TEST OF THE LG EXTENSION & RETRACTION SYS IAW AMM 32-30-00-720-801. ALL CHECKED GOOD. ACFT OK FOR SERVICE.