# N751WC: 1989 Ayres S2R-R1820 - Status: Valid registration - Airframe: [Ayres S2R-R1820](https://openairdocs.org/model/ayres-s2r-r1820) (registry code 0970203, 1 seats) - Engine: [Walter M601E-11](https://openairdocs.org/engine/walter-m601e-11) (registry code 64006) - Data sheets: [TCDS A4SW](https://openairdocs.org/tcds/A4SW) (Thrush Aircraft LLC), [TCDS E00048EN](https://openairdocs.org/tcds/E00048EN) (GE Aviation Czech s.r.o.) (OpenAirDocs) - Serial number: R1820033 - Year built: 1989 - Type: Fixed wing single engine - Engine type: Turbo-prop - Airworthiness: Restricted, agriculture and pest control - Airworthiness date: December 5, 2007 - Certificate issued: September 29, 2017 - Expires: September 30, 2027 - Mode S code: AA1FB7 - Registered owner: [Valley Spraying Service LLC](https://openairdocs.org/faa-owner/VALLEY%20SPRAYING%20SERVICE%20LLC) - Location: [Gann Valley, SD](https://openairdocs.org/faa-place/SD/Gann%20Valley) - Owner type: LLC - Owner's area on the map: 44.0947° N, 99.1180° W: Placed by OpenAirDocs at the center of ZIP code 57341, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=751WC - Page: https://openairdocs.org/aircraft/N751WC From the FAA registry file of October 22, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 18 in force ### Matched by airframe (Ayres S2R-R1820) - [AD 2009-26-11](https://openairdocs.org/ad/2009-26-11): Spar caps · Thrush 600 S-2D, S-2R, S2R-G1 and 13 more. Effective Feb 24, 2010 - [AD 2007-26-01](https://openairdocs.org/ad/2007-26-01): Vertical and horizontal stabilizer · Thrush S-2R, S2R-G1, S2R-G10 and 12 more. Effective Jan 22, 2008 - [AD 2000-05-23](https://openairdocs.org/ad/2000-05-23): Main Landing Gear Fuselage Attach Bolt · Thrush S-2R, S2R-G1, S2R-G10 and 12 more. Effective May 5, 2000 - [AD 93-20-06](https://openairdocs.org/ad/93-20-06): Outboard Wing Huckbolts · Thrush 600 S-2D, S-2R, S2R-R1340 and 6 more. Effective Dec 3, 1993 - [AD 93-20-05](https://openairdocs.org/ad/93-20-05): Vertical Tail Attachment Bracket · Thrush S-2R, S2R-G10, S2R-G6 and 9 more. Effective Dec 3, 1993 - [AD 93-01-03](https://openairdocs.org/ad/93-01-03): Wing Front Spar · Thrush 600 S-2D, S-2R, S2R-G6 and 9 more. Effective Feb 5, 1993 - [AD 84-09-03](https://openairdocs.org/ad/84-09-03): Fuselage Upper Longerons · Thrush S2R-R1820. Effective Sep 21, 1984 ### Matched by engine (Walter M601E-11) - [AD 2025-18-08](https://openairdocs.org/ad/2025-18-08): Engine Mount Section; Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Oct 21, 2025 - [AD 2024-03-05](https://openairdocs.org/ad/2024-03-05): Turbine Engine Reduction Gear · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Apr 17, 2024 - [AD 2024-02-04](https://openairdocs.org/ad/2024-02-04): Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601E-11, M601E-11A, M601E-11AS and 1 more. Effective Mar 28, 2024 - [AD 2023-01-10](https://openairdocs.org/ad/2023-01-10): Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601E-11, M601E-11A, M601E-11AS and 2 more. Effective Mar 13, 2023 - [AD 2022-26-01](https://openairdocs.org/ad/2022-26-01): Turbine Engine Combustion Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 10 more. Effective Jan 26, 2023 - [AD 2022-14-12](https://openairdocs.org/ad/2022-14-12): Turbine Engine Reduction Gear · GE Aviation Czech s.r.o. M601F, M601E-11, M601E-11A and 3 more. Effective Aug 18, 2022 - [AD 2020-23-01](https://openairdocs.org/ad/2020-23-01): Fuel Control/Turbine Engines · GE Aviation Czech s.r.o. H75-200, H80-100, H80-200 and 7 more. Effective Nov 24, 2020 - [AD 2020-15-04](https://openairdocs.org/ad/2020-15-04): Engine Collector/Tailpipe/Nozzle · GE Aviation Czech s.r.o. H75-100, H75-200, H80 and 10 more. Effective Aug 31, 2020 - [AD 2020-15-03](https://openairdocs.org/ad/2020-15-03): Turbine Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Aug 31, 2020 - [AD 2015-17-20](https://openairdocs.org/ad/2015-17-20): Gas generator turbine (GGT) blades · GE Aviation Czech s.r.o. M601E-11, M601E-11A and M601F. Effective Oct 1, 2015 - [AD 2015-14-02](https://openairdocs.org/ad/2015-14-02): Reduction gearbox and supporting cone · GE Aviation Czech s.r.o. M601E-11, M601E-11A and M601F. Effective Aug 18, 2015 ### Historical (superseded or no longer in force) - [AD 2006-07-15](https://openairdocs.org/ad/2006-07-15) (historical): Lower wing spar caps · Thrush S-2R, S2R-G1, S2R-G10 and 12 more. Effective Apr 18, 2006 - [AD 2000-11-16](https://openairdocs.org/ad/2000-11-16) (historical): Lower Spar Caps · Thrush 600 S-2D, S-2R, S2R-G1 and 13 more. Effective Jul 25, 2000 - [AD 97-17-03](https://openairdocs.org/ad/97-17-03) (historical): Lower Spar Cap Bolt Hole Areas · Ayres 600 S-2D, S-2R, S2R-G1 and 12 more. Effective Sep 5, 1997 - [AD 97-13-11](https://openairdocs.org/ad/97-13-11) (historical): Lower Spar Cap Bolt Hole Areas · Ayres 600-S-2C, S-2R, S2R-G1 and 12 more. Effective Jul 23, 1997 - [AD 2024-06-02](https://openairdocs.org/ad/2024-06-02) (historical): Engine Mount Section; Turbine Engine Compressor Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Apr 11, 2024 - [AD 2021-13-07](https://openairdocs.org/ad/2021-13-07) (historical): Engine (Turbine/Turboprop) · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Jun 30, 2021 - [AD 2018-03-22](https://openairdocs.org/ad/2018-03-22) (historical): Turbine Section · GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A and 3 more. Effective Mar 21, 2018 - [AD 2016-07-13](https://openairdocs.org/ad/2016-07-13) (historical): Engine power turbine (PT) disk · GE Aviation Czech s.r.o. M601E-11. Effective Apr 22, 2016 ## Information bulletins (advisory) (1 in force) - [SAIB AIR-22-04](https://openairdocs.org/saib/AIR-22-04): Emergency Exits. Issued Mar 14, 2022 ## NTSB investigations None matched to N751WC. ## FAA accident and incident reports None matched to N751WC. ## Service difficulty reports None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. ## STCs that may be installed (OpenAirDocs) (65, first 50) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the airframe (Ayres S2R-R1820) - [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. TCW Technologies, LLC - [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC - [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC - [STC SA1734SO](https://openairdocs.org/stc/SA1734SO): Installation of new design tail wheel. ABI LLC - [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc - [STC SA04046CH PAGE 2](https://openairdocs.org/stc/SA04046CH%20PAGE%202): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc - [STC SA7965SW](https://openairdocs.org/stc/SA7965SW): Application of fabric and polyurethane finishing system. Shady Aviation LLC - [STC SA04568CH](https://openairdocs.org/stc/SA04568CH): Installation of the uAvionix tailBeaconX, a tail mounted position light with integrated Automatic Dependent Surveillance - Broadcast (ADS-B) Out and 1090MHz Mode-S transponder functionality. uAvionix Corporation - [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc - [STC SA02266SE](https://openairdocs.org/stc/SA02266SE): Installation of a Lever Throttle Quadrant. Kawak Aviation Technologies Inc - [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc - [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc - [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC - [STC SA02499SE](https://openairdocs.org/stc/SA02499SE): Installation of a Pratt & Whitney PT6A-41, PT6A-42, or PT6A-42A engine and a Avia V508H/106B/A propeller. Cascade Aircraft conversions LLC - [STC SA02265SE](https://openairdocs.org/stc/SA02265SE): Installation of a camera housing. Airborne Sensor LLC - [STC SA00410BO](https://openairdocs.org/stc/SA00410BO): Installation of an AV-30-C Multi-Mode Indicator. uAvionix Corporation - [STC SA04401CH](https://openairdocs.org/stc/SA04401CH): Replace existing Engine Mount with Aero Innovations, LLC., Extended Engine Mount on certain Thrush S2R series aircraft fitted with PWC turboprop engine. Aero Innovations LLC - [STC ST03197CH](https://openairdocs.org/stc/ST03197CH): To install full swiveling locking tail wheel assembly onto the existing spring steel tail gear. Turbine Conversions Ltd - [STC SA5190NM](https://openairdocs.org/stc/SA5190NM): Installation of Gustin Aviation chip detector light system. A & L Aircraft Parts Inc - [STC SA01714WI](https://openairdocs.org/stc/SA01714WI): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. Garmin International Inc - [STC SA00344BO PAGE 2](https://openairdocs.org/stc/SA00344BO%20PAGE%202): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SA01323CH](https://openairdocs.org/stc/SA01323CH): Installation of a ground single point fueling system. Turbine Conversions Ltd - [STC SA00902CH](https://openairdocs.org/stc/SA00902CH): Installation of Walter a.s. turboprop engine model M601D-11 or M601E-11 with Avia Propeller Ltd. model V510, V510AG, V508E-AG/99A or V508E-AG/106A in accordance with Turbine Conversions Ltd. Drawing List, Report WAL2000, Revision A, dated March 4, 2005, or later approved revision. Turbine Conversions Ltd - [STC SA01420SE](https://openairdocs.org/stc/SA01420SE): Install a Walter M601-E11 or M601-D11 engine and Avia V508-E-AG 106/A propeller per Cascade Aircraft Conversions Master Drawing List FW-CAC090-90 Revision B, dated August 10, 2004, and Cascade Aircraft Conversions Document FW-CAC090-12, Revision IR, dated June 2, 2004, Installation Manual for Thrush Aircraft S2R Series, Walter Turbine Installation or later FAA approved revisions to either of these documents. Cascade Flying Service LLC - [STC SA02205SE](https://openairdocs.org/stc/SA02205SE): Installation of a replacement airframe fuel pump in accordance with Cascade Flying Service Master Drawing List FW-CFS545-90, Rev. B, dated October 19, 2011, or later FAA approved revision. Cascade Aircraft conversions LLC - [STC SA02212AK](https://openairdocs.org/stc/SA02212AK): Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems. Seaplanes North LLC - [STC SA01845WI](https://openairdocs.org/stc/SA01845WI): Installation of a Center Windshield. Hershey Flying Services - [STC SA02428SE](https://openairdocs.org/stc/SA02428SE): Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft. Henry F Rogers/David E Polley - [STC SA02276AK](https://openairdocs.org/stc/SA02276AK): Installation of AMSAFE Aviation Inflatable Restraints. AMSAFE Inc - [STC SA03518AT](https://openairdocs.org/stc/SA03518AT): Installation of a bonded doubler inside the wing leading edge. Turbine Conversions Ltd - [STC SA1864SO](https://openairdocs.org/stc/SA1864SO): Installation of aluminum skins on the horizontal tail. Aero Innovations LLC - [STC SA1865SO](https://openairdocs.org/stc/SA1865SO): Installation of aluminum skins on the horizontal tail. Aero Innovations LLC - [STC SA02442AK PAGE 2](https://openairdocs.org/stc/SA02442AK%20PAGE%202): Approval of the L-3 Communications NGT 2000/2500 ADS-B system. ADS-B Technologies, LLC - [STC SA00580SE](https://openairdocs.org/stc/SA00580SE): Installation of winglets. Aero Spraying Service Inc - [STC SA02283SE PAGE 2](https://openairdocs.org/stc/SA02283SE%20PAGE%202): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P. Electronics International Inc - [STC ST03554CH](https://openairdocs.org/stc/ST03554CH): Installation of Rotary Gatekeeper and provisions equipment. Turbine Conversions Ltd - [STC SA01011CH](https://openairdocs.org/stc/SA01011CH): Installation of under wing strap enhancer. AG Aviation Innovations - [STC SA00172SE](https://openairdocs.org/stc/SA00172SE): Installation of the following Garrett engines: TPE331-1-151A, -151K, -151G; TPE331-2-201A, -201C, or TPE331-6-252M, -252B, -252T, in combination with a Hartzell HC-B3TN-5(M)/T10282+4 propeller. Valley Air Service Inc - [STC SA00178SE](https://openairdocs.org/stc/SA00178SE): Installation of vortex generators on the wing and tail surfaces of the above model aircraft. Micro AeroDynamics Inc - [STC SA02951CH](https://openairdocs.org/stc/SA02951CH): Installation of modified Wing Spar Splice and Cap per Aeronautix Modification Kit. Gulf Coast Ag Aircraft Sales and Maintenance - [STC SA02985CH](https://openairdocs.org/stc/SA02985CH): Installation of a Cool Start System in accordance with Installation Instructions , Revision A, dated April 14, 2011, or later FAA Approved revision. Turbine Conversions Ltd - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SA01988SE](https://openairdocs.org/stc/SA01988SE): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) MVP-50P. Electronics International Inc - [STC SA03654AT](https://openairdocs.org/stc/SA03654AT): Installation of Avenger Extended Performance Front Spar Enhancement Kit (new wing front spar lower capts, center splice and doublers). Avenger Aircraft and Services - [STC SA00034SE](https://openairdocs.org/stc/SA00034SE): Installation of AG-Air Systems, Inc., chemical disbursement system. (S2R modified per STC SA5953NM and S2R-G10 modified per STC SA00172SE). Kawak Aviation Technologies Inc - [STC SA02247CH](https://openairdocs.org/stc/SA02247CH): Installation of Pheromone Distribution Pod System. Turbine Conversions Ltd - [STC SA01158WI](https://openairdocs.org/stc/SA01158WI): Installation of Aero Enhancements UV250-1 Supplemental Instrument Panel Lightning System. Aero Enhancements Inc - [STC SA01639NY](https://openairdocs.org/stc/SA01639NY): Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B. Scale Modelbuilders Inc - [STC SA00622LA](https://openairdocs.org/stc/SA00622LA): Installation of an electronic digital engine tachometer horizon model P-1000. Horizon Instruments Inc All 65: https://openairdocs.org/aircraft/N751WC/stcs.md ## Related - Other Ayres S2R-R1820 aircraft: https://openairdocs.org/model/ayres-s2r-r1820/aircraft.md - The Walter M601E-11 engine: https://openairdocs.org/engine/walter-m601e-11.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.