A printed or digital boarding pass is not just an entry ticket to your flight—it is a sophisticated, data-dense aerospace manifest document encoded according to IATA Bar Coded Boarding Pass (BCBP) standards.
Core Elements Explained
- PNR (Passenger Name Record): A unique 6-character alphanumeric locator code (e.g.,
X9K7FQ) representing your computerized reservation in airline global distribution systems like Amadeus or Sabre. - Flight Number: The 2-letter IATA airline code followed by 1 to 4 digits (e.g.,
BA 178orEK 202). - Sequence Number (SEQ): The sequential order in which you checked in for the flight.
SEQ 001denotes the very first passenger to check in. In overbooked flight scenarios, higher sequence numbers are occasionally prioritized for involuntary bumps. - Fare Class Code: A single letter indicating ticket pricing tier. While
Yuniversally denotes full-fare economy andJorCdenotes business class, discount fare codes determine frequent flyer mileage accrual rates.
The Feared "SSSS" Code
If you discover SSSS printed prominently on your US-bound boarding pass, it designates Secondary Security Screening Selection. You will be escorted to a dedicated TSA screening lane for extensive explosive trace swabs, physical pat-downs, and complete manual baggage inspection.
Aviation regulations, baggage rules, and passenger rights vary by airline, route, and country. Always verify with your airline and the relevant national aviation authority before travel.