Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 56D is...

56D is

  • Wyandot County Airport, Upper Sandusky, Ohio USA

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Acronym Definition Searched: WPACQ NBAC CFCR BISS NOB FR PVWS WMFO PROBE 03752 TSI RCIA SDZ 96090 MDS