As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT EXTEND FIRST TIME SELECTED, GEAR CAME DOWN WHEN SELECTED SECOND TIME. RIGHT DOWN AND LOCK MICROSWITCH FOUND FAULTY. REPLACED RIGHT MAIN GEAR DOWN AND LOCK MICROSWITCH WITH NEW AND ADJUSTED PER THE LEARJET MAINTENANCE SECTION 3-57. OPERATIONALLY CHECKED SATISFACTORY.