What was found
PGT NOTIFFIED AN UNCOMMANDED IFSD ON A LEAP-1A ENGINE OCCURRING AFTER TAKE OFF. PILOT TRIED TO RESTART THE ENGINE WITHOUT SUCESS. CREW ELECTED AN AIR TURN BACK AND ACFT SAFELY LANDED AT DEPARTURE AIRPORT. PRELIMINARY INVESTIGATIONS PERFORMED REVEALED A SIGNIFICANT FUEL LEAK AT CONNEXION BETWEEN FUEL LINE AND FUEL FLOW TRANSMITTER. 3 OF THE 4 BOLTS SECURING THIS CONNECTION FOUND LOOSE. AFTER REMOVAL, GASKET SEAL BETWEEN BOTH PARTS WAS FOUND HEAVILY DAMAGED. FIRST INVESTIGATIONS.