What was found
THE FLIGHT CREW REPORTED A RED LEFT ENGINE BLEED LEAK MASSAGE WHILE CLIMBING THROUGH 11K FEET. THE FLIGHT CREW RAN THE CHECKLIST AND ELECTED TO RETURN TO THE AIRPORT FOR LANDING AND EVALUATION. THE BASE MAINTENANCE TEAM FOUND A BLEED AIR FITTING ON THE LEFT LOW PRESSURE SUPPLY TUBE TO BE LEAKING ABOVE THE BAGGAGE PANEL. REMOVED AND REPLACED SEALS ON LEAKING BLEED AIR FITTING WITH NEW PER LEAR 45 AMM 20-31-02. PERFORMED LEAK CHECK OF BLEED AIR FITTING, NO LEAKS NOTICED AT THIS TIME. THE AIRCRAFT WAS RETURNED TO SERVICE.