What was found
ON GROUND WITH BOTH ENG ANTI ICE SWITCHES SELECTED OFF THE LT (AMBER) TAI INDICATION IS SHOWN BY THE NR 1 ENG N1 GAUGE. GROUNDED YES. REPLACED NR 1 ENG TAI VALVE REF MM 30 21 11 000 801. OPS CK NORMAL REF MM 30 21 00 710 801.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ON GROUND WITH BOTH ENG ANTI ICE SWITCHES SELECTED OFF THE LT (AMBER) TAI INDICATION IS SHOWN BY THE NR 1 ENG N1 GAUGE. GROUNDED YES. REPLACED NR 1 ENG TAI VALVE REF MM 30 21 11 000 801. OPS CK NORMAL REF MM 30 21 00 710 801.