As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE OFF APROX 13 SECONDS RECIEVED GEAR DISAGREE WARNING MSG AND NOSE GEAR DOOR MSG. MANUAL RELEASE USED TO EXTEND GEAR.ALL HYD SYSTEMS IN AUTO POSITION. NO ICEING CONDITIONS DURING EVENT. EMERGENCY WAS DECLARED. ***AIRCRAFT REMOVED FROM SERVICE*** C/W M ACTION FOR MEL 32-30-01. REF 344971/1 FOR MEL R&R NLG ELECTRICAL HARNESS PER AWA SUP 12-029E. OPS CHECK GOOD REMOVED PLACARD AND REMOVED FROM MEL.