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DataBases updated: Apr 4th, 2025
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STC Holder: Al Backstrom

The Aviation DataBase -- STC Selection System
Aviation DataSource, Inc.

No. of STCs: 2

STC Holder: Al Backstrom
Address: Route 1, Box 199-B, Frisco, Texas 75034
Contact us to have your company added here!
STC No.: SH4997SWStatus: HistoricalApp Date: 06/12/1982Rev Date: 06/28/1983
TC Nos.: 4H11,
Models:
Siam Hiller Holdings Inc.:
UH-12E
ACO: AIR-770: West Certification Branch LA
Installation of Lycoming TIVO-540-A2A engine
STC Holder: Al Backstrom
Address: Route 1, Box 199-B, Frisco, Texas 75034
Contact us to have your company added here!
STC No.: SH4997SWStatus: HistoricalApp Date: 06/12/1982Rev Date: 04/27/1983
TC Nos.: 4H11,
Models:
Siam Hiller Holdings Inc.:
UH-12E
ACO: AIR-770: West Certification Branch LA
Installation of Lycoming TIVO-540-A2A engine