Why should STEBs indicate a State three-letter code?
STEBs should indicate a State three-letter code in order to ease security controls at transfer points, by being able to readily determine the point of origin of the STEBs. State three-letter codes should be those used in ICAO Doc 9303 — Machine Readable Travel Documents (available at: http://www2.icao.int/en/MRTD/Pages/Doc9393.aspx). Please note that State three-letter codes are replaced by airline three-letter codes when LAGs are distributed on board. If the airport name is required, an additional box should be printed on the STEBs. The name of the manufacturer (not the distributor) should also be displayed.