As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GRI - CREW REPORTED LEFT ENGINE LOST POWER WHILE AIRBORNE. CREW ELECTED AN AIR TURN BACK AND MADE AN UNEVENTFUL LANDING. MAINTENANCE TIGHTENED AND SAFTIED FUEL LINE AT LEFT AFT FIRE SEAL. LEAK CHECK AND GROUND POWER CHECKS WERE GOOD. (M)