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What is a PPU - Portable Pilot Unit?

18.01.22 - AD Navigation of Norway is one of very few manufacturers of state-of-the-art PPUs. This article aims to highlight what a PPU is.

Can you rely on AIS for precise navigation?

18.03.10 - The answer to this question is a clear NO. Many pilots do not realize this simple fact. I will by this throw some light on a matter I thought was common knowledge among most pilots: