As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON SHORT FINAL, BURNING SMELL FROM A/C DUCTS, 20 SEC LATER LT PACK TRIP OFF LIGHT ILLUMINATED. SHUT LT PACK OFF, LT BLEED OFF AND LANDED. LEFT OFF ON TAXI IN AND RAN ABNORMAL PROCEDURE. DID NOT TRY TO REESTABLISH PACK OPS. COOLING FAN AIR INLET COOLING DOOR. REMOVED AND REPLACED RELAY R-596 (LT PACK COOLING DOOR RELAY) OPS CHECKS GOOD ON GRND AT EWR IAW 727 M/M 21-51-00.