Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 1U4 is...

1U4 is

  • New Meadows Airport, New Meadows, Idaho USA

1U4 is also in:

Acronym Definition Searched: GB WFJW RL 74956 ETNT BSIC WGGB 35406 SAP 3 ZVA L YMMV GOES VSG