As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE LANDING GEAR WOULD NOT EXTEND NORMALLY. AIRCRAFT LANDED AT OKC WITHOUT INCIDENT. AIRCRAFT MAINTENANCE FERRIED TO IAH AND LANDING WITHOUT INCIDENT. REMOVED AND REPLACED THE LANDING GEAR CONTROL LEVER AND OPERATIONALLY CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.