AvBuyer Magazine, February 2015
by Ken Elliott
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Helping you to familiarize with avionics advances and related mandates for equipage, Ken Elliott unpacks Controller-Pilot Data Link Communications (CPDLC) within NextGen, this month focusing on ATN-B1.
Data Comm encompasses two main areas: ATN-B1 (or CPDLC) and FANS 1/A+ (including ATN-B2). It can be confusing when confronted by a string of unfamiliar letters. The reader requires either an avionics glossary to crack the code or a degree in aviation technology (possibly both) to understand the alphabet soup. Controller-Pilot Data Link Communications (CPDLC) is one of those codes, and it is best understood by an introduction of its history.
Like most technologies, CPDLC began with a need to solve a problem and progressed through a series of gradual piece-meal steps toward a seemingly eternal resolution in an environment where goalposts are constantly shifting. Historically, signs of frequency congest...