What was found
DURING TAKEOFF AND JUST AFTER MLG HANDLE WAS RAISED, ADC SSEC MISCOMPARE & GEAR DISAGREE N EICAS MESSAGES ILLUMINATED & WAS OBVIOUS NLG DID NOT RETRACT & YELLOW REVERSE SYMBOLOGY DN FOR NLG ICON DISPLAYED. PERFORMED QRH PROCEDURE & LANDED WITHOUT INCIDENT. PERFORMED NLG SHOCK STRUT SERVICING & FOUND N2 PRESSURES AND FLUID LEVEL WERE WITH IN LIMITS TO THE NLG SHOCK STRUT SERVICING CHART IAW MM 12-10-52 FIG 301 SHEET 1. PER MCC, REMOVED FAULTY UPLOCK SWITCH (SG006) & REPLACED IT WITH A NEW UPLOCK SWITCH AS REQUIRED. OPS CHECK GOOD. L/G OPS AS COMMANDED WITH NO MESSAGES OR DEFECTS NOTED. LOWERED ACFT DOWN OFF JACKS & CONFIGURED ACFT BACK TO ITS AIRWORTHY CONDITION. WORK PERFORMED IAW MM 12-10-52 AND 32-32-10.