As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA - FLT 4869 - AFTER TAKEOFF, FLAPS WOULD NOT RETRACT. AIRCRAFT RETURNED TO LGA AND LANDED WITHOUT INCIDENT. FLAPS WERE BROUGHT UP TO ZERO AND MEL'D. UPON ARRIVAL PSM RE-RIGGED FLAP UP AND DOWN LIMIT SWITCHES. ALL CHECKS WERE SATISFACTORY. ALL WORK WAS DONE IAW BEECH MM. AIRCRAFT RETURNED TO SERVICE.