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No. of STCs: 4

STC Holder: Robertson Aircraft Corp 839 West Perimeter Road, Renton, WA 98055, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA1431WE	Status: Current	App Date:	Rev Date: 04/02/1978
Description: Installation of rudder trim system.
TC Nos.: 3A12, 3A17, 3A19, 5A6, A13CE
Models: The Cessna Aircraft Company150E, 150F, 150G, 172, 172A, 172B, 172C, 172D, 172F (USAF T-41A), 172G, 172H (USAF T-41A), 172M, 175A, 175B, 175C, 177, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H
ACO: AIR-770: West Certification Branch SEA

STC Holder: Robertson Aircraft Corp 839 West Perimeter Road, Renton, WA 98055, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA2326WE	Status: Historical	App Date:	Rev Date: 11/05/1973
Description: Installation of recontoured wing leading edge, stall fences, and wing tips. (P206A LANDPLANE) (TP206E LANDPLANE AND SKIPLANE) (P206 LANDPLANE AND FLOATPLANE) (TU206E SKIPLANE)
TC Nos.: A4CE
Models: The Cessna Aircraft Company206, P206, P206A, P206B, P206C, P206D, P206E, TP206B, TP206C, TP206D, TP206E, TU206A, TU206B, TU206C, TU206D, TU206E, U206, U206A, U206B, U206C, U206D
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Robertson Aircraft Corp 839 West Perimeter Road, Renton, WA 98055, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA474NW	Status: Historical	App Date:	Rev Date:
Description: Replace original split flaps with Fowler flaps.
TC Nos.: 3A25
Models: The Cessna Aircraft Company340 Series
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Robertson Aircraft Corp 839 West Perimeter Road, Renton, WA 98055, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA854NW	Status: Current	App Date: 10/22/1979	Rev Date: 10/30/1979
Description: Installation of droop aileron system, stall fences and stall strips
TC Nos.: 3A21
Models: Cessna Aircraft CompanyT210N
ACO: AIR-770: West Certification Branch SEA