Incident: Alaska B737 at Seattle and San Jose on Jan 12th 2017, unknown substance, cabin crew report sick

An Alaska Airlines Boeing 737-900, registration N237AK performing flight AS-322 from Seattle,WA to San Jose,CA (USA) with 181 passengers and 6 crew, was preparing for departure, before boarding, when a white powdery substance was seen by cabin crew falling from the cabin ceiling vents. (avherald.com) Plus d'info...