As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LANDING LEFT PACK LIGHT CAME ON RAN QRH LIGHT RESET AND CAME BACK ON LEFT PACK INDICATED 90 DEG C. WHEN LIGHT ILLUMINATED WITH TEMP CONT IN AUTO. REMOVED ACM & FOUND SEIZED & IMPELLER FAN MISSING A BLADE. NO DAMAGE TO THE DIFFUSER. INSTALLED A NEW ACM REF MM 21 51 04 400 802 002 OPS & LEAK CHECK GOOD ROTABLE PART VERIFIED BY SEAMC.