As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O GEAR DISAGREE MASTER WARNING , QRH C/W EMERGENCY DECLARE DEVERSIONARY LAND, SYS WAS ABLE TO DOWN LOCK BUT NOT UP LOCK , SYS DID TURN GREEN FOR DOWNLOCK. ACFT DIVERTED, EMERGENCY DECLARED. ADJUSTED NLG OLEO CENTERED/EXTENDED PROXIMITY SENSOR BACK INTO LIMITS IAW AMM 32-61-05 AND PERFORMED FUNCTIONAL TEST OF MLG EXTEN/ RETRAC SYS IAW AMM 32-30-00. OPS CHECKED GOOD.