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FAA STC category

Engine and powerplant STCs

Engine, turbine, exhaust, nacelle, inlet, and related powerplant changes. This directory contains 1,512 selected records listed with status Current in the June 30, 2026 FAA DRS snapshot and links every entry to its source.

Showing 241–360 of 1,512Page 3 of 13
SA00888SEEngine and powerplant

Option 1: Install Walter M601-E11S engine and a Hartzell HC-B3TW-3/T10282N+4 propeller or a Walter M601-E11 engine and an Avia V508-E-AG 106/A propeller per the Master Drawing List and Installation Instructions given in Approved Model List SA00888SE. (Note: Prior to July 17, 2002, the model M601-E11S engine was designated as the model M601-E11 engine). Option 2: Install a Walter M601-D11 engine and Avia V508-E-AG 106/A propeller per Cascade Flying Service Master Drawing List CFS-MDL-0001 Rev G, dated June 15, 2004, and Cascade Flying Service Document CFS-IM-107, Rev A, dated July 29, 2003, “Installation Instructions for Walter Turbine Installation on Air Tractor 300 & 400 Series Ag Aircraft,” or later FAA-approved revisions to these documents. NOTE: The Air Tractor model AT-400, AT-402B, AT-502, AT-502B, and AT-503A airplanes are not eligible for modification under option 2.

FAA holder: Cascade Flying Service LLC

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SA493CHEngine and powerplant

Increase in maximum gross weight from 3600 lbs. to 3700 lbs. with installation of Continental I0-550-B engine in accordance with D'Shannon Products Installation Instruction 71-20-00, dated 10/20/88, or later FAA-approved revision; and installation of Cooling Air Baffles in accordance with D'Shannon Products Installation Instruction DSP1M95-2, dated 6/1/95, FAA-approved 6/21/95 or later FAA Approved revisions.

FAA holder: D'Shannon Products Ltd.

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SA00468WIEngine and powerplant

Installation of NorthPoint XP470 (T.C.M.) engine approved per STC SE4988NM, with McCauley D3A34C401/90DFA -2, -4, -6, -8 & -10 propellers on Cessna Aircraft Models 180, 180A through 180K, Serial Nos 30000 through 50911, and 18050912 through 18053203, and associated changes in accordance with NorthPoint Aviation, Installation Instructions. C-180 S/N 30000-52700. Rev. A dated June 15, 2020 or later "FAA Approved Revisions". Airplane Flight Manual Supplement Rev. A dated June 15, 2020, or later "FAA Approved Revisions" is required for airplanes with Serial Number 52770, and 18053001 through 18053203 (53001-53203).

FAA holder: NorthPoint Aviation

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SA01027CHEngine and powerplant

Installation of GE Aviation Czech s.r.o. Model M601E-11, M601D-11, H75-100, H75-200, H80, H80-100 and H80-200, Pratt & Whitney Canada Corp. Models PT6A-34, PT6A-34AG, PT6A-42 and PT6A-42AG, the AVIA Propeller Ltd. Models V510, V510AG and V508E-AG and Hartzell Propellers Models HC-B4TW-3, HC-B3TN-3AE and HC-B3TN-3 in accordance with Turbine Conversions Drawing List, Report 3000, Revision C, dated September 27, 2018, or later FAA approved revision.

FAA holder: Turbine Conversions Ltd

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