As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER SELECTING GEAR UP ON TAKEOFF, RECEIVED A GEAR DISAGREE AURAL WARNING AND TRIPLE CHIME ON EICAS MSG. RAN POM CHECKLIST AND PULLED EMERGENCY GEAR EXTENSION HANDLE. NOSE GEAR INDICATION WAS RED BOX. AFTER RUNNING CHECKLIST WE GOT 3 GREEN LIGHTS. FOUND NLG CENTERED/EXTENDED PROX SENSOR OUT OF CLEARANCE AND OFFSET. ADJUSTED NLG CENTERED/EXTENDED PROX SNSR TO CORRECT CLEARANCE AND OFFSET TOLERANCE IAW AMM 32-61-05. PERFORMED GEAR SWINGS IAW AMM 07-11-00. ALL CHECKS GOOD AT THIS TIME.