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DataBases updated: Apr 4th, 2025
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STC Holder: Yarnell, Don C.

The Aviation DataBase -- STC Selection System
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No. of STCs: 2

STC Holder: Yarnell, Don C.
Address: Rte 1, Box 11, Underwood, WA 98651, United States
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STC No.: SA497NWStatus: CurrentApp Date: 06/05/1977Rev Date: 08/08/1977
TC Nos.: A-758,
Models:
Aircraft Parts & Development Corp.:
A-3
ACO: AIR-770: West Certification Branch SEA
Installation of a Sensenich propeller
STC Holder: Yarnell, Don C.
Address: Rte 1, Box 11, Underwood, WA 98651, United States
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STC No.: SA685NWStatus: CurrentApp Date: 11/18/1977Rev Date: 11/15/1978
TC Nos.: A-761,
Models:
American Champion Aircraft Corp.:
11AC
ACO: AIR-770: West Certification Branch SEA
Installation of a Lycoming engine, a Sensenich propeller, PA18 landing gear, and drooped wing tips