What was found
BTB - "R REV ISLN VAL" CAME ON AFTER STARTING ENGINES. MTX ADVISED TO RETURN TO GATE. RETURNED TO GATE UNDER TOW. ERASED MESSAGE. CYCLED NR 2 ENG REV FAULT STAYED OUT. REF FIM 78-34-00, FIG 111.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BTB - "R REV ISLN VAL" CAME ON AFTER STARTING ENGINES. MTX ADVISED TO RETURN TO GATE. RETURNED TO GATE UNDER TOW. ERASED MESSAGE. CYCLED NR 2 ENG REV FAULT STAYED OUT. REF FIM 78-34-00, FIG 111.