As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT TOP OF DESCENT, WHEN POWER CAME TO IDLE, MASTER CAUTION ILLUMINATED AND COWL ANTI-ICE LIGHT FLICKERED FOR AN EXTENDED PERIOD OF TIME. NR 2 COWL ANTI-ICE. ACFT GROUNDED. REPLACED THE TAI PRESSURE SWITCH ON THE NR 2 ENGINE IAW AMM 30-21-21. OPS CHECK GOOD IAW AMM 30-21-21-400-801, STEP "G".