As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT LANDING GEAR DID NOT RETRACT AFTER TAKEOFF. EMERGENCY DECLARED. RETURNED TO AUS. REMOVED MLG UNLOCK CYLINDER AND INSTALLED LH MLG UNLOCK CYLINDER. LEAK CHECK IS GOOD. REF. AMM 32-33-02-4. INSTALLED NEW CLAMPUP BUSHING. COMPLETED INSTALLATION OF L MLG UNLOCK CYLINDER. LEAK CHECK GOOD. AMM: 32-33-02-4.