Waco YPF
NC-15700 s/n 4375
Waco NC-15700 was one of two model YPFs built by Waco
Aircraft Company. From the dates it appears that these
two, serial numbers 4374 & 4375 were built concurrently.
These were the first of the “new” style
“F” models, commonly exemplified by the
later and more numerous UPF-7.
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