As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB CONFIGURATION WARNING ALERT WAS RECEIVED DURING FLAP RETRACTION. EMERGENCY DECLARED, LANDED WITHOUT EVENT. FOUND NOSE GEAR CENTERING PINS MISSING UPPER CAM. INSTALLED MISSING PINS & REPACKED THE NOSE STRUCT IAW CARD 776A. PERFORMED OPERATIONAL TEST OF NLG EXTENSION & RETRACTION SYS IAW AMM 32-34-00-715. SYS CHECKED NORMAL.