Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym YPT-9 is...

YPT-9 is

  • Stearman prototype PT-9 Cloudboy trainer aircraft

YPT-9 is also in:

Acronym Definition Searched: TT APE PORR TEU 32428 FAV ANBS 92C Nd BLEVE CASTA MEE WCVU 51017 AFSB