As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OPEN U NOSE GEAR AMBER LT REMAINED ON AFTER GEAR RETRACTION ON BOTH PANELS. NO VIBRATION & GEAR EXTENDED NORMALLY WITH DOOR LT INDICATIONS EXTINGUISHED. DUPLICATED NLG DOOR INDICATIONS ON GROUND, WITH BOTH NOSE GEAR DOORS FULLY CLOSED HAD DUAL NLG DOOR NOT CLOSED INDICATION IN COCKPIT. FOUND EXCESSIVE DIRT & GRIME BUILDUP UNDER BOTH DOOR UPLOCK HOOKS. CLEANED UPLOCKS & OPERATED DOORS MANY TIMES, INDICATION CKD NORMAL EACH TIME REF MM 32-61-00-5.