As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT INTO ATL AFTER SPEED TRIM LIGHT; UPON ENTERING IMC; IAS DISAGREE LIGHT ILLUMINATED. WE ALSO HAD AN ALTITUDE DISAGREE LIGHT ILLUMINATED MOMENTARILY (ONLY ONCE) / FOUND CAPT'S PITOT PROBE CLOGGED; REMOVED AND REPLACED REF AMM 34-11-01 PART ISSUE # 3312309POS: 1 TAG/GRB NO: 407469 P/N OFF: S232N911-6 P/N ON: 232A9105-20RA S/N OFF: 353357 S/N ON: 376259