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No. of STCs: 3

STC Holder: Larson AG Box 139, Stephen, MN 56757, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA01905CH	Status: Current	App Date: 06/06/2003	Rev Date: 11/28/2003
Description: Replacement of an existing Pratt and Whitney model 1340 S3H1 engine and Hamilton Standard Model 12D40 propeller with a Pratt and Whitney model 1340 S3H1-G engine and Hamilton Standard Model 3D40 Propeller. Limited to installation on serial number 1541R ONLY.
TC Nos.: A4SW
Models: Thrush Aircraft Inc.S-2R
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Larson AG Box 139, Stephen, MN 56757, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA01980CH	Status: Current	App Date: 02/20/2004	Rev Date: 05/23/2008
Description: Replacement of an existing Pratt and Whitney Model WASP S3H1 engine and Hamilton Standard Model 12D40 propeller with a Pratt and Whitney Model WASP S3H1-G engine and Hamilton Standard propeller with model 3D40 hub and blade model 6631A-S or model 23D40 hub with blade model 6601A-S, 7005A-S, or 7035A-S.
TC Nos.: A3SW
Models: Thrush Aircraft Inc.S-2R
ACO: AIR-760: Central Certification Branch CHI

STC Holder: Larson AG Box 139, Stephen, MN 56757, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SA02449CH	Status: Current	App Date: 12/10/2006	Rev Date: 08/30/2007
Description: Replace filter stack with filter box and outside airscoop.
TC Nos.: A3SW
Models: Thrush Aircraft Inc.S-2R
ACO: AIR-760: Central Certification Branch CHI