What was found
THE LANDING GEAR DID NOT EXTEND NORMALLY WHEN SELECTED FOR LANDING BY THE FLIGHT CREW. THE LANDING GEAR WAS MANUALLY EXTENDED AND THE AIRCRAFT LANDED SAFELY. MAINTENANCE FOUND THE LANDING GEAR CONTROL RELAY WAS STUCK AND WAS ABLE TO RESET THE RELAY. MULTIPLE RETRACTION AND EXTENSION CHECKS WERE PERFORMED ON AIRCRAFT JACKS, AND THE DISCREPANCY WAS NOT DUPLICATED. THE AIRCRAFT HAS BEEN RELEASED BACK TO SERVICE, AND NO FURTHER REPORTS OF LANDING GEAR FAILURE HAS BEEN REPORTED.