[1] Packet Assembler / Disassembler, beschrieben durch X.3

[2] Public Access Device (networking)

[3] Program Approval Document (->"NASA Acronym List")

[4] Preliminary Advisory Data (Crew Data Uplink) (->"NASA Acronym List")

[3] Paderborn, Germany - internationale Fughafen-Kennung IATA TLA {Luftfahr5}