As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - FLIGHT 464 - THE LEFT AND RIGHT FUEL BOOST PUMPS WERE CYCLING IN FLIGHT. SEVEN SECONDS ON AND 3 SECONDS OFF CONTINUOUSLY FROM 15000 TO 28000 FEET. MAINTENANCE INSPECTED AND FOUND THE RIGHT ENGINE FEED TUBE CRACKED. THE TUBE WAS REPLACED AND OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.