[1] Personal Digital Assistant - Sammelbezeichnung f. Portfolio, Pocketcomputer, programmierbare Taschenrechner, tragbare Sprachübersetzer, Palmtops und stiftbasierte (pen-based) Organizer

[2] unter ODA/ODIF: Processable Document Architecture

[3] in der Mechanik: Precision Drive Axis

[4] Preliminary Design Approval/Authorization (->"IEEE Standard Dictionary")

[5] Probability Discrete Automata (->"IEEE Standard Dictionary")

[6] Parallel Drive Architecture

[7] Payload Disconnect Assembly (->"NASA Acronym List")

[8] Pressurized Docking Adapter (Space Shuttle) (->"NASA Acronym List")

[9] Puerto Inirida, Colombia - internationale Fughafen-Kennung