As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE LANDING GEAR WOULD NOT RETRACT. CREW FOLLOWED GEAR HANDLE LOCKED PROCEDURE BUT GEAR HANDLE RELEASE BUTTON INEFFECTIVE. CREW LEFT GEAR DOWN AND RETURNED TO SAT. LANDING NORMAL EXCEPT SPOILERS WOULD NOT ARM FOR LANDING. FOUND LANDING GEAR ANTI-RETRACTION BUTTON STUCK. LUBED BUTTON AND THE LANDING GEAR CONTROL LEVER PER MM 32-31. CHECK-C 4-9-00 MCI.