As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA'S REPORT UNUSUAL ACRID SMELL THRU OUT CABIN. NO ABNORMAL INDICATIONS IN COCKPIT OR SMELL. FOLLOWED W.C. 2120-2367 REF FIG 6 AND FIG 7 - CHECKS GOOD - WORKING WC 7100-2619. DUCT BURN. C/W W/C 7100-2619. ALL CKS GOOD NO MORE SMELLS NOTED AT THE TIME. C/W NO GO ODI ATA 21-71. (LP4999450)