As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 535 - EN ROUTE TUL-DFW - DURING GEAR RETRACTION, UNABLE TO RAISE GEAR HANDLE FROM OFF TO UP WITHOUT PULLING OVERRIDE TRIGGER. LEVER LATCH CIRCUIT BREAKER ON P6-3 WAS NORMAL. GEAR EXTENSION WAS NORMAL. AL OTHER SYSTEMS NORMAL. LANDED DFW WITHOUT INCIDENT. REPLACED LANDING GEAR ACCESSORY UNIT. PERFORMED OPERATIONS CHECK PER MM. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)