As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT AFT PRESS LIGHT FOR LT AFT BOOST PUMP INOPERATIVE. NOTE WITH BOTH LT PUMP INOPERATIVE WITH BOTH LT PUMP OFF ASSOCIATED LT SYS PRESS ON EICAS NOT PRESENT. REPLACED LT AFT FUEL BOOST PUMP PRESS SWITCH IAW AMM 28-42-01, OPERATIONS CHECKED NORMAL.