As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4373 - AFTER DEPARTURE WHILE ON CLIMB-OUT, THE LEFT ENGINE DRIVEN FUEL PUMP LOW PRESSURE LIGHT ILLUMINATED. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT MAIN FUEL PUMP. SYSTEM CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)