As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE A-CHECK INSPECTION WHILE PERFORMING EMERGENCY GEAR EXTENSION CHECK, RIGHT HAND GEAR DOOR WOULD NOT OPEN. INVESTIGATED DISCREPANCY AND FOUND SWAGED TERMINAL END ON DOOR CABLE BROKEN OFF. IN AN ACTUAL IN-FLIGHT EMERGENCY, THE RT MAIN LANDING GEAR WOULD NEVER EXTEND.