As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF FROM EWR. THE AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED FIM TASK 32-30-00-810-815 AND FOUND THE MANUAL EXTENSION SWITCH(S1060) OUT OF ADJUSTMENT. THE SWITCH WAS ADJUSTED AND A REPAIR CONFIRMATION RETRACT TEST WAS PERFORMED WITH NO DEFECTS NOTED.