What do the codes on boarding passes mean?

What does the six-digit code on my boarding pass mean? This is basically a unique code to help identify the passenger to who the boarding pas belongs, reported Conde Nast. This code is your Passenger Name Reference (PNR), record locator, reservation code, or booking code.



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TSA doesn't publish specific guidelines on why certain passengers get SSSS markings on their boarding passes. Anecdotally, passengers with unusual travel patterns, one-way international flights and travelers to certain countries get it the most. It is also possible that TSA assigns SSSS markings randomly.

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For example, at my previous airline Y is usually used to denote that you paid the full Economy Class fare, which means you're entitled to certain perks like the chance to upgrade to Business if available, full mileage credited to your frequent flyer account, and free seat selection before flight.

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Secondary Security Screening Selection — or The Quad S, as some call it — means you have been selected for additional enhanced security screening by the Transportation Security Administration and the Department of Homeland Security.

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Why Does the TSA Swab Hands? The Transportation Security Administration randomly swabs passengers' hands at security checkpoints and airport gates to test them for traces of explosives. The TSA swabs are analyzed for nitroglycerin, nitrates, glycerin, or other chemicals.

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Any airline passenger with the letters “SSSS” printed on their boarding pass have been selected for extra security screening by airport security. Used by the Transportation Security Administration (TSA), the letters SSSS stand for Secondary Security Screening Selection or Secondary Security Screening Selectee.

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Checking in 24 hours before your flight will usually land you somewhere in the B boarding group — which is generally adequate to find either a window or aisle seat or 2 seats together if you are flying with a companion.

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They can identify whether an item is organic or metallic. They can also identify its shape, structure, and density. But they cannot specifically identify an item's substance. So, technically speaking, TSA scanners can't distinguish drugs from other powders or liquids.

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How are American Airlines boarding groups assigned? American passengers are put in the highest group for which they qualify. For example, basic economy passengers are typically assigned to Group 9. However, if a passenger with AAdvantage Gold elite status books a basic economy ticket, they will get upgraded to Group 4.

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