If memory serves me correctly, the Otter was originally patterned after the old Beaver. Just bigger with more horses. Later versions had a turbo engine to replace the radial 9's. Probably a PW PT6. And I promise you that if you're in a sick AT6, that runway is 1500 feet. Had a good friend that had a house out there with a brilliant yellow J3 in his garage/hangar.
Apologies to the OP for hijacking your thread.
Doc
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