As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, FLIGHT 5431, THE LANDING GEAR HANDLE WAS PLACED IN THE UP POSITION. THE LANDING GEAR FAILED TO RETRACT. THE AIRCRAFT LANDED WITH NO FURTHER INCIDENT AND WAS RETURNED TO THE GATE. THE ENTIRE TIME THE CREW HAD THE GEAR DOWN AND LOCKED INDICATIONS. REMOVED AND REPLACED THE RIGHT SQUAT SWITCH. NO TEARDOWN REPORT WILL BE REQUIRED.