FAA-listed STC holder

Larson AG STCs

The Jun 30, 2026 FAA DRS snapshot lists 3 selected supplemental type certificates with status Current under Larson AG. The records span 1 public aircraft directories and 2 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

May 23, 2008

latest recorded revision

Modification mix

Engine and powerplant2 Other aircraft modifications1

Aircraft represented

Thrush Aircraft S-2R23 STCs

Recently revised records

Showing the 3 most recently revised records. Category directories provide the complete paginated discovery path.

SA01980CHEngine and powerplantRevised May 23, 2008

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.

FAA holder: Larson AG

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SA02449CHOther aircraft modificationsRevised Aug 30, 2007

Replace filter stack with filter box and outside airscoop.

FAA holder: Larson AG

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SA01905CHEngine and powerplantRevised Nov 28, 2003

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.

FAA holder: Larson AG

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