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No. of STCs: 2

STC Holder: Efficiency Aircraft P.O. Box 37, Kent, WA 98031, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA113NW	Status: Historical	App Date:	Rev Date: 05/24/1974
Description: Installation of EAC 3D40-401 AG-100-2 propeller with 4M121-1 propeller governor.
TC Nos.: A3SW, A4SW
Models: Ayres Corporation600 S-2D, 600 S2D
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500

STC Holder: Efficiency Aircraft P.O. Box 37, Kent, WA 98031, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA99NW	Status: Historical	App Date:	Rev Date: 03/29/1974
Description: Installation of HSP 3D40-401 hub with EAC-100-2 blades.
TC Nos.: 1A16
Models: Ag Cat CorporationG-164A
ACO: Seattle ACO Branch, Tel: +1 (206) 231-3500