As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT SAME TIME AS RIGHT PACK AUTOFAIL AND RIGHT PACK TEMP CAUTION MESSAGES FLIGHT ATTENDANTS SMELLED AND SAW WHITE SMOKE IN THE CABIN (FLIGHT 5966 FILED CLOSED)SMELL AND WHITE SMOKE ISOLATED TO RH PACK. DEFERRED RH PACK. REF EAML 1291268 FOR DEFERRAL OF RH PACK PER MEL 21-51-1B.