As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3812 - LANDING GEAR WILL NOT EXTEND BY NORMAL LANDING GEAR LEVER. DUPLICATED PROBLEM WITH AIRCRAFT ON JACKS. REPLACED LANDING GEAR CONTROL LEVER. PERFORMED GEAR SWING. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)