# N21164: Stinson HW75 - Status: Valid registration - Airframe: [Stinson HW75](https://openairdocs.org/model/stinson-hw75) (registry code 8632002, 3 seats) - Engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008) - Data sheets: [TCDS A-709](https://openairdocs.org/tcds/A-709) (Consolidated Vultee Aircraft Corporation Stinson Division), [TCDS E-233](https://openairdocs.org/tcds/E-233) (Continental Aerospace Technologies, Inc.) (OpenAirDocs) - Serial number: 7049 - Type: Fixed wing single engine - Engine type: Reciprocating - Airworthiness: Standard - Airworthiness date: July 23, 1957 - Certificate issued: June 4, 2020 - Expires: June 30, 2027 - Mode S code: A1C080 - Registered owner: [Christenson Dean A](https://openairdocs.org/faa-owner/CHRISTENSON%20DEAN%20A) - Location: [Intl Falls, MN](https://openairdocs.org/faa-place/MN/Intl%20Falls) - Owner type: Individual - Owner's area on the map: 48.5331° N, 93.1631° W: Placed by OpenAirDocs at the center of ZIP code 56649, within about 10 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21164 - Page: https://openairdocs.org/aircraft/N21164 From the FAA registry file of October 24, 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. The registry lists only the engine series, so ADs for every Continental C85 model are included. ## ADs that may apply (OpenAirDocs): 14 in force ### Matched by airframe (Stinson HW75) - [AD 46-39-01](https://openairdocs.org/ad/46-39-01): Oleo Truss Wear · Consolidated Vultee Aircraft Corporation, Stinson Division 10 and HW-75 ### Matched by engine (Continental C85 series) - [AD 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 1998 - [AD 98-01-06](https://openairdocs.org/ad/98-01-06): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Feb 13, 1998 - [AD 94-05-05 R1](https://openairdocs.org/ad/94-05-05-R1): Cylinder Rocker · Continental Motors C-125-1, C-125-2, C145-2 and 59 more. Effective Feb 13, 1996 - [AD 95-21-15](https://openairdocs.org/ad/95-21-15): Aviation Gasoline · Continental Motors A-65-8, C85-12F, C85-12FJ and 77 more. Effective Nov 28, 1995 - [AD 93-22-05](https://openairdocs.org/ad/93-22-05): Carburetor Air Intake Housing Assemblies · Continental Motors C90-12F, C90-12FH, C90-12FJ and 22 more. Effective Dec 14, 1993 - [AD 93-19-04](https://openairdocs.org/ad/93-19-04): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Oct 18, 1993 - [AD 81-16-05](https://openairdocs.org/ad/81-16-05): Magnetos · Lycoming Engines AEIO-320-E1B, AEIO-320-E2B, AEIO-360-B1G6 and 234 more. Effective Aug 6, 1981 - [AD 81-07-06](https://openairdocs.org/ad/81-07-06): AC Fuel Pumps · Continental Motors A-65-1, A-65-12, A-65-12F and 60 more. Effective Apr 1, 1981 - [AD 80-06-05](https://openairdocs.org/ad/80-06-05): Magnetos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 254 more. Effective Mar 28, 1980 - [AD 69-24-03](https://openairdocs.org/ad/69-24-03): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 321 more. Effective Nov 29, 1969 - [AD 69-09-01](https://openairdocs.org/ad/69-09-01): Eisemann Magnetos · Eisemann Magnetos, 2A4-45-B2, 2A4-49-B2 and 158 more - [AD 49-50-01](https://openairdocs.org/ad/49-50-01): Generator Drive Coupling Rubber Disc · Continental Motors C-125-1, C-125-2, C145-2 and 27 more - [AD 47-40-02](https://openairdocs.org/ad/47-40-02): Piston Pins · Continental Motors C-125-1, C-125-2, C75-12F and 4 more ### Historical (superseded or no longer in force) - [AD 94-14-12](https://openairdocs.org/ad/94-14-12) (historical): Octane Aviation Gasoline · Teledyne Continental Motors A-65-8, C85-12, E185-11 and 68 more ## Information bulletins (advisory) (4 in force) - [SAIB NE-18-27](https://openairdocs.org/saib/NE-18-27): POWERPLANT Rocker Shaft Boss Inspection. Issued Sep 10, 2018 - [SAIB NE-16-13](https://openairdocs.org/saib/NE-16-13): Powerplant - Prohibited use of sealant. Issued Mar 8, 2016 - [SAIB NE-13-04](https://openairdocs.org/saib/NE-13-04): Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing Inspection. Issued Oct 31, 2012 - [SAIB CE-98-21R1](https://openairdocs.org/saib/CE-98-21R1): . Issued Jun 10, 1998 ## NTSB investigations None matched to N21164. ## FAA accident and incident reports None matched to N21164. ## 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) (68, 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 (Stinson HW75) - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA00081NY](https://openairdocs.org/stc/SA00081NY): Installation of Iceman Aviation Supplies, Inc. Carburetor Ice Detector. Alcor LLC - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC - [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric. Aviation Products Systems 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 SA02402SE PAGE 2](https://openairdocs.org/stc/SA02402SE%20PAGE%202): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) CGR-30C. Electronics International Inc - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). 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 SA593CH](https://openairdocs.org/stc/SA593CH): Install Champion SlickSTART magneto booster system. Champion Aerospace LLC - [STC SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. M-20 Oil Separators LLC - [STC SA01944CH](https://openairdocs.org/stc/SA01944CH): Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index, per ASTM Specification D-439 or D-4818 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227. Experimental Aircraft Association Inc - [STC SA944GL](https://openairdocs.org/stc/SA944GL): Superseded by STC SA01944CH. Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index. EAA Aviation Foundation - [STC SA1008WE](https://openairdocs.org/stc/SA1008WE): Installation of Poly-Fiber covering material. Poly-Fiber Inc - [STC SA02520AT](https://openairdocs.org/stc/SA02520AT): Installation of M-20 Oil Separator, model 600-WP. M-20 Oil Separators LLC - [STC SA5159NM](https://openairdocs.org/stc/SA5159NM): Installation of chip detector system. Northwest Aircraft Inc - [STC SA5755NM](https://openairdocs.org/stc/SA5755NM): Installation of a propeller anti theft device. Davis Ray G - [STC SA4-302](https://openairdocs.org/stc/SA4-302): Installation of BN-1 propeller spinner. ACS Products Co, Inc - [STC SA4-1210](https://openairdocs.org/stc/SA4-1210): Installation of Eonnex cover on aircraft surfaces. Ceconite, Inc - [STC SA798EA](https://openairdocs.org/stc/SA798EA): Installation of Monitair exhaust gas combustion monitor kit. Rosemount Engineering Co - [STC SA1350WE](https://openairdocs.org/stc/SA1350WE): Replace existing fabric on wings, fuselage, empennage and/or control surfaces with fiberglass cloth. Ceconite, Inc - [STC SA4-1575](https://openairdocs.org/stc/SA4-1575): Ceconite 101 covering of complete airplane. Cooper Engineering Corporation - [STC SA4-840](https://openairdocs.org/stc/SA4-840): Fabric replaced with glass cloth on wings, fuselage, empennage and/or control surfaces. Air Fibre Inc ### Approved for the engine (Continental C85 series) - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC. Lists C85-12 - [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive. Alcor LLC. Lists C85-12 - [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com - [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd. Lists C85-12 - [STC SE00145WI](https://openairdocs.org/stc/SE00145WI): Installation of B&C Specialty Products Model BC 320-( ) Engine Starter. B & C Specialty Products Inc. Lists C85-12 - [STC SE03232CH](https://openairdocs.org/stc/SE03232CH): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application. Hartzell Propeller Inc. Lists C85-12 - [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp. Lists C85-12 - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. Lists C85-12 - [STC SE00533SE](https://openairdocs.org/stc/SE00533SE): Installation of Real Gasket Corporation Continental Engine Pushrod Tube Modification. Real Gaskets Tennessee. Lists C85-12 - [STC SE7559SW](https://openairdocs.org/stc/SE7559SW): Install adapter to permit use of a spin-on oil filter. Stratus Tool Technologies LLC. Lists C85-12 - [STC SE10076SC](https://openairdocs.org/stc/SE10076SC): Modify engine by installation of C12ST2/S starter. Hartzell Engine Technologies, LLC. Lists C85-12 - [STC SE10129SC](https://openairdocs.org/stc/SE10129SC): Installation of rotocoil, valve springs, ni-resist valve guide, exhaust valve with chrome flash on stem, and rocker shaft with thrust buttons. Continental Motors, Inc. Lists C85-12 - [STC SE34WE](https://openairdocs.org/stc/SE34WE): Installation of Electro-Coatings, Inc., piston rings on Continental pistons. Continental Motors, Inc. Lists C85-12 - [STC SE4247SW](https://openairdocs.org/stc/SE4247SW): Regrind crankshaft to .020 undersize on crankpin and main journals. Continental Motors, Inc - [STC SE8113SW](https://openairdocs.org/stc/SE8113SW): Installation of any or all parts identified by Airmotive drawing/parts application list AEC9109-2. Continental Motors, Inc - [STC SE7562SW](https://openairdocs.org/stc/SE7562SW): Install adapter to permit use of a spin-on oil filter. Stratus Tool Technologies LLC. Lists C85-12 - [STC SE3330NM](https://openairdocs.org/stc/SE3330NM): Continental valve cover gasket. Real Gaskets Tennessee. Lists C85-12 - [STC SE1590GL](https://openairdocs.org/stc/SE1590GL): Installation of Slick Aircraft Products Magneto Model 4202 or Model 4302. Champion Aerospace LLC. Lists C85-8 - [STC SE01309AT](https://openairdocs.org/stc/SE01309AT): Modify engines. Lowe Aviation Aircraft Maintenance. Lists C85-12 - [STC SE09002SC](https://openairdocs.org/stc/SE09002SC): Regrind Teledyne Continental crankshafts, to .020-inch undersize on crankpin and main journals. Aircraft Specialties Services Inc - [STC SE01943CH](https://openairdocs.org/stc/SE01943CH): Add the following approved fuels: unleaded automotive gasoline 87 minimum antiknock index, per ASTM Specification D-439 or D-4814 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227. Experimental Aircraft Association Inc. Lists C85-12 - [STC SE634GL](https://openairdocs.org/stc/SE634GL): Superseded by STC SE01943CH. Add the following approved fuel: unleaded automotive gasoline, 87 minimum antiknock index. EAA Aviation Foundation - [STC SE154CH](https://openairdocs.org/stc/SE154CH): Engine oil pump repair/rework specifications and procedures. Harmony Machine Prod Inc. Lists C85-12 - [STC ST00435AT](https://openairdocs.org/stc/ST00435AT): Overhaul/repair of the Delco starter adapter drive (P/N 1971890) used with Delco starters P/N's 11096656 and 1109660. Aerotech - [STC SE02172AT](https://openairdocs.org/stc/SE02172AT): Replace engine crankcase with model O-200 crankcase. Swords Don - [STC SE09513SC](https://openairdocs.org/stc/SE09513SC): Installation and usage of Exxon 20W50 Multigrade aircraft engine oil conforming to Exxon Oil Formulation WS-3013. Exxon Company USA All 68: https://openairdocs.org/aircraft/N21164/stcs.md ## Related - Other Stinson HW75 aircraft: https://openairdocs.org/model/stinson-hw75/aircraft.md - The Continental C85 series engine: https://openairdocs.org/engine/continental-c85-series.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.