As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DECENT, CABIN FILLED WITH AN ACRID ODOR. BARELY NOTICED IN THE COCKPIT, BACK VERY STRONG AT REAR GALLEY & BULKHEAD. ODOR RESULTED IN HEADACHES & BURNING NOSES AS REPORTED BY THE CREW. ACCOMPLISHED JC 33L00021001 & TSM TASK 49-00-00-810-831 FOR FUMES IN CABIN & FOUND NO EVIDENCE OF CONTAMINATION IN APU OR DUCTING. REPLACED THE RT ENG ASSEMBLY IAW TC 33L40071003.