A recent article is leading some to ask whether TSA has lifted the 3-1-1 policy on liquids, aerosols and gels. Not so. While we continue to aggressively work to find a way to relax the 3-1-1 requirements, we know liquid explosives still pose a threat to aviation security. This remains a top priority and TSA is partnering with vendors to find a solution that effectively screens liquids.
Two notable major incidents involving liquid explosives are:
1995 “Bojinka Plot” in Asia where Ramzi Yousef planned to use liquid explosives to bomb 12 passenger carrying aircraft bound for the United States. This was one month after his test on Philippine Airlines Flight 434 where a smaller “liquid” container killed one person.
So please remember: 3-1-1 for carry-ons = 3.4 ounce (100ml) bottle or less (by volume) ; 1 quart-sized, clear, plastic, zip-top bag; 1 bag per passenger placed in screening bin. One-quart bag per person limits the total liquid volume each traveler can bring. 3.4 ounce (100ml) container size is a security measure.