What was found
DURING TAXI OUT FWD EQUIPMENT SUPPLY FAN #1 STATUS MESSAGE APPEARED AND AC RETUNED TO GATE (BTB) AND MTX GROUNDED AC , MTX DEFERRED FOR DEPARTURE IAW MEL ABX-21-58-3-2-1 . AND RETURNED AC TO SERVICE .
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING TAXI OUT FWD EQUIPMENT SUPPLY FAN #1 STATUS MESSAGE APPEARED AND AC RETUNED TO GATE (BTB) AND MTX GROUNDED AC , MTX DEFERRED FOR DEPARTURE IAW MEL ABX-21-58-3-2-1 . AND RETURNED AC TO SERVICE .