As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE ANTI-ICE OVERHEAD LIGHT IS FLICKERING ON AND OFF. NO OTHER ABNORMAL INDICATIONS. SWITCH WAS IN THE OFF POSITION. ACFT GROUNDED. REMOVED 2 ENG TAI VALVE IAW AMM 30-21-11-000-801. INSTALLED NR 2 ENG TAI VALVE IAW AMM 30-21-11-400-801.