Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 51MI is...

51MI is

  • Cass Lake - Cove Island SeaPlane Base, Pontiac, Michigan USA

51MI is also in:

Acronym Definition Searched: MIKE CERG SPAM MSRC V MSC SPG CJ UIW VMA WETG 90408 CFL DND1 OATS