As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5202 - CLT-LYH - AFTER TAKEOFF AND CLIMB-OUT, AIRCREW REPORTED A CONSTANT GEAR WARNING HORN. AIRCRAFT RETURNED TO CLT. NO INFLIGHT EMERGENCY WAS DECLARED. AIRCRAFT LANDED AT CLT WITH NO OTHER PROBLEMS. MAINTENANCE FOUND THE BYPASS PIN POPPED. RESET PIN, PIN POPPED AGAIN. REMOVED AND REPLACED VALVE. BLEED HYD SYSTEM. SYSTEM OPS CHECKED GOOD. (M)