As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT THRU FL250 THE NOSE GEAR BUMPED TWICE AND TRIED TO UNLOCK. GAINED ACCESS TO LANDING GEAR CONTROL MODULE AND VERIFIED INSTALLED PART NUMBER OF 9914637-1. REMOVED LGCM AND INSTALLED A MODIFIED LGCM IAW CE750 MM 32-30-02. PERFORMED SATISFACTORY LANDING GEAR RETRACT SYSTEM, OPERATIONAL CHECKS.