As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE-OFF AND GEAR RETRACTION THE GEAR UNLOCK INDICATOR LIGHT REMAINED ILLUMINATED WITH AN ASSOCIATED FLASHING HYDRAULIC PRESSURE ANNUNCIATOR. IAW CHECKLIST CYCLED HYD CTL CIRCUIT BREAKER AND LIGHTS EXTINGUISHED. NORMAL GEAR EXTENSION AT DESTINATION. MAINTENANCE REPLACED THE LANDING GEAR CONTROL PCB NZ0009. GEAR SWINGS AND A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. AIRCRAFT WAS RETURNED TO SERVICE.