What was found
WHILE TAXIING R REV ISLN VAL MSG AFTER ENG START,AC RETURNED TOGATE (BTB) AND MTX GROUNDED AC , MTX DEFERRED RH T/R FOR DEPARTURE IAW MEL ABX-78-31-1, AND RETURNED AC TO SERVICE . AND AC DEPARTED
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE TAXIING R REV ISLN VAL MSG AFTER ENG START,AC RETURNED TOGATE (BTB) AND MTX GROUNDED AC , MTX DEFERRED RH T/R FOR DEPARTURE IAW MEL ABX-78-31-1, AND RETURNED AC TO SERVICE . AND AC DEPARTED