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Old 03-25-2016, 10:23 PM   #1
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Default US Propellers Inc

Help ID needed..

looking for information on what it is for.

US Propellers Inc
DES 14K7797
Sn 10015

thanks in advance for any help

take care

Jeff Wright
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Old 03-26-2016, 12:25 PM   #2
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Posts: 766

There's not much available on U.S. Propellers, and they are mostly known for a large number of drone props made during/after WW2.

I think the drawing number is actually 44K7797, which indicates it was manufactured under a 1944 military contract, and corresponds to civilian model 76FGSA, as shown on the attached scan.

Where we are left off with this manufacturer is a listing of aircraft models that used that model propeller. But look closely at the footnote #2 at the bottom of the page. It lists a sequence of serial numbers that are not approved because of a manufacturing defect. Although it refers to model 76FGS (without the "A") I suspect that it's a minor factor and that yours was likely included in the non-certificated group. In that case it's pretty clear that it was intended to be used on the Interstate L6 with the Kinner engine.

Is the bolt hole circle on yours 5 1/4" or 6"? See if it matches up with the numbers noted in footnote #2.
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