As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE MASTER WARNING ON TAKEOFF IAW THE NON-NORMAL CHECKLIST. GEAR WAS PUT DOWN AND LANDED AT NEAREST SUITABLE CLIMBOUT AFTER GEAR WAS SELECTED UP, THE MAINS CAME UP. PERFORMED VISUAL INSPECTION ON NLG & MLG SYSTEM IAW AMM 32-00-00. PERFORMED LANDING GEAR EXTENSION AND RETRACTION IAW AMM 32-30-00. PERFORMED NLG STRUT NITROGEN CHECK IAW AMM 12-12-32. OPS AND INSPECTION CHECK GOOD.