What was found
WHEN GEAR HANDLE WAS RAISED AFTER TAKEOFF FROM MSY THE LT MLG DID NOT RETRACT. THE FORWARD PANEL RED AND GREEN LT GEAR LIGHTS WERE ILLUMINATED. THE OVERHEAD PANEL SHOWED GREEN LT GEAR LIGHT ON. THE GEAR WAS CYCLED WITH THE SAME RESULT. GEAR DOWN INDICATIONS WERE NORMAL. THE AIRCRAFT WAS RETURNED TO MSY WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LT MLG FRANGIBLE FITTING BROKEN. NO OTHER DAMAGE WAS NOTED. THE FRANGIBLE FITTING AND NUT WERE REMOVED AND REPLACED.