Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 5N9 is...

5N9 is

  • Montauk Seaplane Base, Montauk, New York USA

5N9 is also in:

Acronym Definition Searched: 67036 AERO 25IDA 3/4 RMUCE 20662 CEC 54216 92591 CDV PL PP RRDT CBV 32203 89404 AOCS