As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF WHEN GEAR SELECTED UP, RECEIVED "L/G GEAR NOT UPLOCKED' ECAM MESSAGE. WITHIN 90 SECONDS OF SELECTING LANDING GEAR HANDLE UP, LANDING GEAR AND GEAR DOOR IN TRANSITION INDICATION LIGHTS AND ECAM WARNING EXTINGUISHED. FLIGHT CONTINUED TO PHX, SELECTED GEAR DOWN WITH NORMAL INDICATIONS AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOOTING REVEALED THE LEFT MAIN LANDING GEAR DOOR ACTUATOR FITTING AND STRAP AT THE KEEL BEAM WAS CRACKED. REPLACED FITTINGS AND STAP. OPERATIONAL CHECK OK.