As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - FLT 1538 - AFTR TAKEOFF, GEAR FAILED TO RETRACT. CREW ACCOMPLISHED CHECKLISTS AND RETURNED PHX AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED NOSE GEAR OVER CENTER ACTUATOR. ACCOMPLISHED EXTENSION AND RETRACTION CHECKS AND LEAK CHECKS WITH NO LEAKS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)