As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURN BACK. FLT NR 8804. AFTER TAKE OFF THE LANDING GEAR WOULD NOT RETRACT. CREW ATTEMPTED SEVERAL CYCLES BEFORE ELECTING TO RETURN. GEAR LIGHTS RED AND GREEN, WOULD CYCLE BETWEEN GEAR DOWN AND LOCKED AND UNLOCKED. NO EMERGENCY WAS DECLARED AND THE PLANE LANDED NORMALLY AND SAFETY. REPLACED NOSE LANDING GEAR WIRE HARNESS. (K)