As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#79, BOS-EWR. (AIRCRAFT DIVERTED TO BWI) ' WING A/I FAIL AFTER TAKEOFF WITH MFD SHOWING LEFT A/I VALVE FAILED CLOSED AND RIGHT NORMAL; ACCOMPLISHED LH WAI VALVE RESET IAW FIM TASK 30-11-00-810-808-A WITH NO FAULTS PRESENT. A/C OK FOR SERVICE. MCC BOB WAS NOTIFIED.