As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJU - FL 1970 - AFTER TAKEOFF, CREW REPORTED A PNEUMATIC LEAK ON THE LEFT ENGINE (EICAS MESSAGE - 'L ENG OVHT'). FLIGHT RETURNED TO SJU. MAINTENANCE CONFIRMED A BLEED PROBLEM AND TIGHTENED A CLAMP ON THE LEFT ENGINE DUCTING. FLIGHT TOOK OFF AND RETURNED A SECOND TIME FOR THE SAME PROBLEM. MAINTENANCE FOUND THE LEFT ENGINE EXPANSION JOINT CRACKED AND REPLACED IT. (M)