Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Tacan" Definition
noun
A system of navigation that uses ultrahigh frequency signals to determine the distance and bearing of an aircraft from a transmitting station.
Source: Merriam-Webster
initialism
An ultrahigh frequency electronic air navigation system, able to provide continuous bearing and slant range to a selected station. the term is derived from tactical air navigation. jp 1-02.
Source: Wiktionary
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