# Interstate S-1A - Type: Aircraft model (FAA registry) - Registry code: 1850202 - Manufacturer (registry): INTERSTATE - Model: S-1A - Aircraft type: Fixed wing single engine - Category: Airplane - Engines: 1 · Reciprocating - Seats: 2 - Weight class: Up to 12,499 lb - Cruise speed: 77 mph - Certification: Type certificated - Data sheet: [TCDS A-737](https://openairdocs.org/tcds/A-737) (OpenAirDocs) - Holder: STOL Aviation LLC - Registered aircraft: 66 - Page: https://openairdocs.org/model/interstate-s-1a Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. None matched. ## Registered aircraft (66, first 50) - [N28312](https://openairdocs.org/aircraft/N28312): [Mattson Joshua C](https://openairdocs.org/faa-owner/MATTSON%20JOSHUA%20C), [Gardner, KS](https://openairdocs.org/faa-place/KS/Gardner), built 1941, S/N 4 - [N28315](https://openairdocs.org/aircraft/N28315): [Holcomb Garry M](https://openairdocs.org/faa-owner/HOLCOMB%20GARRY%20M), [Point, TX](https://openairdocs.org/faa-place/TX/Point), S/N 7 - [N28318](https://openairdocs.org/aircraft/N28318): [Robinson Stephen](https://openairdocs.org/faa-owner/ROBINSON%20STEPHEN), [Livermore, CA](https://openairdocs.org/faa-place/CA/Livermore), built 1941, S/N 10 - [N28319](https://openairdocs.org/aircraft/N28319): [Brooks Ronald Alan](https://openairdocs.org/faa-owner/BROOKS%20RONALD%20ALAN), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), built 1941, S/N 11 - [N28329](https://openairdocs.org/aircraft/N28329): [Brown Kevin C](https://openairdocs.org/faa-owner/BROWN%20KEVIN%20C), [Watsonville, CA](https://openairdocs.org/faa-place/CA/Watsonville), built 1941, S/N 17 - [N28332](https://openairdocs.org/aircraft/N28332): [New Vision Aviation Inc](https://openairdocs.org/faa-owner/NEW%20VISION%20AVIATION%20INC), [Fresno, CA](https://openairdocs.org/faa-place/CA/Fresno), S/N 20 - [N34926](https://openairdocs.org/aircraft/N34926): [Pietsch Kent D](https://openairdocs.org/faa-owner/PIETSCH%20KENT%20D), [Burlington, ND](https://openairdocs.org/faa-place/ND/Burlington), built 1941, S/N 121 - [N34939](https://openairdocs.org/aircraft/N34939): [Meeks David](https://openairdocs.org/faa-owner/MEEKS%20DAVID), [Vineburg, CA](https://openairdocs.org/faa-place/CA/Vineburg), built 1941, S/N 34 - [N37203](https://openairdocs.org/aircraft/N37203): [Birch Robert J](https://openairdocs.org/faa-owner/BIRCH%20ROBERT%20J), [Tacoma, WA](https://openairdocs.org/faa-place/WA/Tacoma), built 1941, S/N 46 - [N37205](https://openairdocs.org/aircraft/N37205): [Sutton Aircraft Salvage LLC](https://openairdocs.org/faa-owner/SUTTON%20AIRCRAFT%20SALVAGE%20LLC), [Palmer, AK](https://openairdocs.org/faa-place/AK/Palmer), built 1941, S/N 48 - [N37210](https://openairdocs.org/aircraft/N37210): [Coleman Aeromarine Inc](https://openairdocs.org/faa-owner/COLEMAN%20AEROMARINE%20INC), [Lakeland, FL](https://openairdocs.org/faa-place/FL/Lakeland), built 1941, S/N 53 - [N37217](https://openairdocs.org/aircraft/N37217): [Weisberg Perry A](https://openairdocs.org/faa-owner/WEISBERG%20PERRY%20A), [Minot, ND](https://openairdocs.org/faa-place/ND/Minot), built 1941, S/N 60 - [N37219](https://openairdocs.org/aircraft/N37219): [Omiecinski Walter F](https://openairdocs.org/faa-owner/OMIECINSKI%20WALTER%20F), [Peninsula, OH](https://openairdocs.org/faa-place/OH/Peninsula), built 1941, S/N 62 - [N37230](https://openairdocs.org/aircraft/N37230): [Wrong Brothers Aviation LLC](https://openairdocs.org/faa-owner/WRONG%20BROTHERS%20AVIATION%20LLC), [Webster, MN](https://openairdocs.org/faa-place/MN/Webster), S/N 73 - [N37231](https://openairdocs.org/aircraft/N37231): [Wrong Brothers Aviation LLC](https://openairdocs.org/faa-owner/WRONG%20BROTHERS%20AVIATION%20LLC), [Webster, MN](https://openairdocs.org/faa-place/MN/Webster), S/N 74 - [N37232](https://openairdocs.org/aircraft/N37232): [Morris Todd W](https://openairdocs.org/faa-owner/MORRIS%20TODD%20W), [Cozad, NE](https://openairdocs.org/faa-place/NE/Cozad), built 1941, S/N 75 - [N37235](https://openairdocs.org/aircraft/N37235): [Chapman Gregory](https://openairdocs.org/faa-owner/CHAPMAN%20GREGORY), [Antioch, IL](https://openairdocs.org/faa-place/IL/Antioch), built 1941, S/N 78 - [N37239](https://openairdocs.org/aircraft/N37239): [Westlake Chad C](https://openairdocs.org/faa-owner/WESTLAKE%20CHAD%20C), [Columbus, OH](https://openairdocs.org/faa-place/OH/Columbus), S/N 82 - [N37241](https://openairdocs.org/aircraft/N37241): [Wendt Dan L](https://openairdocs.org/faa-owner/WENDT%20DAN%20L), [Olean, MO](https://openairdocs.org/faa-place/MO/Olean), built 1941, S/N 84 - [N37248](https://openairdocs.org/aircraft/N37248): [Larsen Kevin L](https://openairdocs.org/faa-owner/LARSEN%20KEVIN%20L), [Firth, ID](https://openairdocs.org/faa-place/ID/Firth), built 1941, S/N 91 - [N37262](https://openairdocs.org/aircraft/N37262): [Phoenix Rocky D](https://openairdocs.org/faa-owner/PHOENIX%20ROCKY%20D), [Winnemucca, NV](https://openairdocs.org/faa-place/NV/Winnemucca), built 1941, S/N 105 - [N37266](https://openairdocs.org/aircraft/N37266): [Lost Aviators Of Pearl Harbor LLC](https://openairdocs.org/faa-owner/LOST%20AVIATORS%20OF%20PEARL%20HARBOR%20LLC), [Bellingham, WA](https://openairdocs.org/faa-place/WA/Bellingham), built 1941, S/N 109 - [N37271](https://openairdocs.org/aircraft/N37271): [Jones Alva L](https://openairdocs.org/faa-owner/JONES%20ALVA%20L), [Craig, CO](https://openairdocs.org/faa-place/CO/Craig), built 1941, S/N 114 - [N37280](https://openairdocs.org/aircraft/N37280): built 1941, S/N 123 - [N37286](https://openairdocs.org/aircraft/N37286): [Brothers Mark R](https://openairdocs.org/faa-owner/BROTHERS%20MARK%20R), [Pinckney, MI](https://openairdocs.org/faa-place/MI/Pinckney), built 1941, S/N 129 - [N37291](https://openairdocs.org/aircraft/N37291): [Allen John B Jr](https://openairdocs.org/faa-owner/ALLEN%20JOHN%20B%20JR), [Sutter Creek, CA](https://openairdocs.org/faa-place/CA/Sutter%20Creek), built 1941, S/N 134 - [N37294](https://openairdocs.org/aircraft/N37294): [Ladegard Paul E](https://openairdocs.org/faa-owner/LADEGARD%20PAUL%20E), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), built 1941, S/N 137 - [N37296](https://openairdocs.org/aircraft/N37296): [Ballard Rickey G](https://openairdocs.org/faa-owner/BALLARD%20RICKEY%20G), [Buckeye, AZ](https://openairdocs.org/faa-place/AZ/Buckeye), built 1941, S/N 139 - [N37299](https://openairdocs.org/aircraft/N37299): [Armstrong Kevin L](https://openairdocs.org/faa-owner/ARMSTRONG%20KEVIN%20L), [Corvallis, OR](https://openairdocs.org/faa-place/OR/Corvallis), built 1941, S/N 142 - [N37301](https://openairdocs.org/aircraft/N37301): [Riedener Chris J](https://openairdocs.org/faa-owner/RIEDENER%20CHRIS%20J), [Beaverton, OR](https://openairdocs.org/faa-place/OR/Beaverton), built 1941, S/N 144 - [N37303](https://openairdocs.org/aircraft/N37303): [Borror Tim A](https://openairdocs.org/faa-owner/BORROR%20TIM%20A), [Wshngtn Ct Hs, OH](https://openairdocs.org/faa-place/OH/Wshngtn%20Ct%20Hs), built 1941, S/N 146 - [N37304](https://openairdocs.org/aircraft/N37304): [Bays Stuart B](https://openairdocs.org/faa-owner/BAYS%20STUART%20B), [Tyler, TX](https://openairdocs.org/faa-place/TX/Tyler), built 1941, S/N 147 - [N37309](https://openairdocs.org/aircraft/N37309): [Pietsch Kent D](https://openairdocs.org/faa-owner/PIETSCH%20KENT%20D), [Burlington, ND](https://openairdocs.org/faa-place/ND/Burlington), built 1941, S/N 152 - [N37317](https://openairdocs.org/aircraft/N37317): [Wildman Jeanne L](https://openairdocs.org/faa-owner/WILDMAN%20JEANNE%20L), [Independence, OR](https://openairdocs.org/faa-place/OR/Independence), built 1941, S/N 160 - [N37327](https://openairdocs.org/aircraft/N37327): [Stover Andrew C](https://openairdocs.org/faa-owner/STOVER%20ANDREW%20C), [Fullerton, CA](https://openairdocs.org/faa-place/CA/Fullerton), S/N 170 - [N37330](https://openairdocs.org/aircraft/N37330): [Westlake Chad](https://openairdocs.org/faa-owner/WESTLAKE%20CHAD), [Columbus, OH](https://openairdocs.org/faa-place/OH/Columbus), built 1941, S/N 173 - [N37335](https://openairdocs.org/aircraft/N37335): [Love Kenneth Jay](https://openairdocs.org/faa-owner/LOVE%20KENNETH%20JAY), Combaning, built 1941, S/N 178 - [N37340](https://openairdocs.org/aircraft/N37340): [Horrell Charles G](https://openairdocs.org/faa-owner/HORRELL%20CHARLES%20G), [Lyme, NH](https://openairdocs.org/faa-place/NH/Lyme), built 1941, S/N 183 - [N37357](https://openairdocs.org/aircraft/N37357): [Mann Thomas A](https://openairdocs.org/faa-owner/MANN%20THOMAS%20A), [Ford, WA](https://openairdocs.org/faa-place/WA/Ford), built 1941, S/N 200 - [N37369](https://openairdocs.org/aircraft/N37369): [Northway Mathew W](https://openairdocs.org/faa-owner/NORTHWAY%20MATHEW%20W), [Eugene, OR](https://openairdocs.org/faa-place/OR/Eugene), built 1941, S/N 212 - [N37370](https://openairdocs.org/aircraft/N37370): [Wellenstein Nic J](https://openairdocs.org/faa-owner/WELLENSTEIN%20NIC%20J), [Big Sky, MT](https://openairdocs.org/faa-place/MT/Big%20Sky), built 1941, S/N 213 - [N37373](https://openairdocs.org/aircraft/N37373): [Morris Justin](https://openairdocs.org/faa-owner/MORRIS%20JUSTIN), [Cozad, NE](https://openairdocs.org/faa-place/NE/Cozad), built 1941, S/N 216 - [N37381](https://openairdocs.org/aircraft/N37381): [Taylor Brent](https://openairdocs.org/faa-owner/TAYLOR%20BRENT), [Ottumwa, IA](https://openairdocs.org/faa-place/IA/Ottumwa), built 1941, S/N 224 - [N37385](https://openairdocs.org/aircraft/N37385): [Dawson Steven L](https://openairdocs.org/faa-owner/DAWSON%20STEVEN%20L), [East Troy, WI](https://openairdocs.org/faa-place/WI/East%20Troy), built 1941, S/N 228 - [N37386](https://openairdocs.org/aircraft/N37386): [Mann Thomas A](https://openairdocs.org/faa-owner/MANN%20THOMAS%20A), [Ford, WA](https://openairdocs.org/faa-place/WA/Ford), built 1941, S/N 229 - [N37397](https://openairdocs.org/aircraft/N37397): [Doyle James J](https://openairdocs.org/faa-owner/DOYLE%20JAMES%20J), [Hillsborough, NJ](https://openairdocs.org/faa-place/NJ/Hillsborough), built 1942, S/N 311 - [N37401](https://openairdocs.org/aircraft/N37401): [Nevergall Michael](https://openairdocs.org/faa-owner/NEVERGALL%20MICHAEL), [Brighton, CO](https://openairdocs.org/faa-place/CO/Brighton), built 1942, S/N 244 - [N37403](https://openairdocs.org/aircraft/N37403): [Pietsch Kent D](https://openairdocs.org/faa-owner/PIETSCH%20KENT%20D), [Burlington, ND](https://openairdocs.org/faa-place/ND/Burlington), built 1942, S/N 246 - [N37406](https://openairdocs.org/aircraft/N37406): [Lander David W](https://openairdocs.org/faa-owner/LANDER%20DAVID%20W), [Gilroy, CA](https://openairdocs.org/faa-place/CA/Gilroy), built 1942, S/N 249 - [N37407](https://openairdocs.org/aircraft/N37407): [Bradford Murvin L](https://openairdocs.org/faa-owner/BRADFORD%20MURVIN%20L), [Hensley, AR](https://openairdocs.org/faa-place/AR/Hensley), S/N 250 All 66: https://openairdocs.org/model/interstate-s-1a/aircraft.md ## STCs approved for it (55, first 50) - [STC SA00079NY](https://openairdocs.org/stc/SA00079NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K008 on single and multi engine fixed wing light aircraft incorporating Teledyne Continental reciprocating engines of 450 horsepower or less.. Airwolf Filter Corporation - [STC SA00081NY](https://openairdocs.org/stc/SA00081NY): Installation of Iceman Aviation Supplies, Inc. Carburetor Ice Detector.. Alcor LLC - [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 SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric.. Aviation Products Systems Inc. - [STC SA01026SE](https://openairdocs.org/stc/SA01026SE): Improved fuel gascolator assembly.. Steve's Aircraft - [STC SA01240SE](https://openairdocs.org/stc/SA01240SE): Installation of secondary voltage indication system. Visual Instruments LLC - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA01944CH (1 OF 2)](https://openairdocs.org/stc/SA01944CH%20(1%20OF%202)): 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 SA01967WI (2 OF3)](https://openairdocs.org/stc/SA01967WI%20(2%20OF3)): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications 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 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 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 SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SA02283SE PAGE 1](https://openairdocs.org/stc/SA02283SE%20PAGE%201): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In Flight Data) CGR-30P. Electronics International Inc. - [STC SA02402SE PAGE 1](https://openairdocs.org/stc/SA02402SE%20PAGE%201): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) CGR-30C. Electronics International Inc. - [STC SA02428AK](https://openairdocs.org/stc/SA02428AK): Installation of a hydraulically actuated ski drag assembly. Northern Airframes LLC - [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 SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA04776NY (1 OF 2)](https://openairdocs.org/stc/SA04776NY%20(1%20OF%202)): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc. - [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 SA10077SC](https://openairdocs.org/stc/SA10077SC): Installation of push-button starter system.. Hartzell Engine Technologies, LLC - [STC SA1008WE](https://openairdocs.org/stc/SA1008WE): Installation of Poly-Fiber covering material.. Poly-Fiber Inc. - [STC SA1351WE](https://openairdocs.org/stc/SA1351WE): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12). Ceconite Inc - [STC SA1355WE](https://openairdocs.org/stc/SA1355WE): Installation of fiberglass cowling.. STOL Aviation LLC c/o Tom Csatari - [STC SA1626NM PAGE 1](https://openairdocs.org/stc/SA1626NM%20PAGE%201): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201): Installation of electronics International Digital Volt/Amp Gauges and Accessories.. Electronics International - [STC SA2350NM PAGE 1](https://openairdocs.org/stc/SA2350NM%20PAGE%201): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International - [STC SA2683NM](https://openairdocs.org/stc/SA2683NM): Installation of Precise Flight, Inc. stand-by vacuum system (SVS). Precise Flight Inc - [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches.. Aero Manufacturing Inc. - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories.. Electronics International Inc. - [STC SA308EA (1 OF 2)](https://openairdocs.org/stc/SA308EA%20(1%20OF%202)): Installation of carburetor ice detection system 105AP in single and twin engine aircraft and single engine helicopters powered by Continental, Franklin, and Lycoming type engines equipped with Marvel-Schebler MA-2, MA-3, MA-4, MA-4-5, MA-6 and HA-6 series carburetors. (Normal,Utility and Acrobatic Category airplanes and helicopters equipped with engines and carburetors as described.). Alfred R Puccinelli - [STC SA3862NM PAGE 1](https://openairdocs.org/stc/SA3862NM%20PAGE%201): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.. Electronics International - [STC SA4-1210](https://openairdocs.org/stc/SA4-1210): Installation of Eonnex cover on aircraft surfaces.. Ceconite, Inc - [STC SA4-1514](https://openairdocs.org/stc/SA4-1514): Ceconite 101 covering of entire airplane.. Cooper Engineering Corporation - [STC SA4-289](https://openairdocs.org/stc/SA4-289): BN-1 propeller spinner. Raymond M Stits - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer.. Electronics International - [STC SA4305WE](https://openairdocs.org/stc/SA4305WE): Installation of GAR-AERO wheel adapters and tundra type tires on the main landing gear. Seaplanes North LLC - [STC SA4503NM](https://openairdocs.org/stc/SA4503NM): Remove original cloth covering and install Ceconite covering. Ceconite Division of Poly-Fiber Inc. - [STC SA4624NM](https://openairdocs.org/stc/SA4624NM): Installation of F. Atlee Dodge springs 2097 and 2127 to replace bungee cords on ski equipped airplanes.. F Atlee Dodge Aircraft Service - [STC SA4724NM](https://openairdocs.org/stc/SA4724NM): Installation of Cleveland brakes.. Machen Inc - [STC SA489EA](https://openairdocs.org/stc/SA489EA): Installation of ARP Inc. carburetor ice detection system. Aircraft & Rotorcraft Products (ARP) Inc - [STC SA573AL](https://openairdocs.org/stc/SA573AL): Install Cleveland wheel assembly 40-28 and Cleveland brake assembly30-18.. STOL Aviation LLC c/o Tom Csatari - [STC SA5755NM](https://openairdocs.org/stc/SA5755NM): Installation of a propeller anti theft device.. Davis Ray G - [STC SA593CH](https://openairdocs.org/stc/SA593CH): Install Champion SlickSTART magneto booster system.. Champion Aerospace LLC - [STC SA682NW](https://openairdocs.org/stc/SA682NW): Installation of two, 6 Gallon auxilliary fuel tanks. Ross, Warren B. - [STC SA743GL](https://openairdocs.org/stc/SA743GL): Superseded by STC SA01944CH. Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index.. EAA Aviation Foundation - [STC SA7965SW](https://openairdocs.org/stc/SA7965SW): Application of fabric and polyurethane finishing system.. Shady Aviation LLC - [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc All 55: https://openairdocs.org/model/interstate-s-1a/stcs.md ## NTSB investigations (22) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB WPR26LA286](https://openairdocs.org/ntsb/WPR26LA286), Aug 1, 2026: Interstate S-1A (N37248), Blackfoot, ID, substantial damage, investigation ongoing - [NTSB WPR22LA003](https://openairdocs.org/ntsb/WPR22LA003), Oct 2, 2021: Interstate S-1A (N37317), Independence, OR, substantial damage. Probable cause: The separation of the left rudder pedal interconnect cable during takeoff, which resulted in the student pilot’s inability to maintain directional control. - [NTSB ERA10LA251](https://openairdocs.org/ntsb/ERA10LA251), May 1, 2010: Interstate S1A (N34926), Lakeland, FL, substantial damage. Probable cause: The pilot’s failure to maintain clearance from terrain for undetermined reasons. - [NTSB LAX06CA276](https://openairdocs.org/ntsb/LAX06CA276), Aug 1, 2006: Interstate S-1A (N28332), Buckeye, AZ, substantial damage. Probable cause: the in-flight separation of the control stick. A contributing factor was the rough terrain for the forced landing, which resulted in a collapsed landing gear. - [NTSB DEN06LA037](https://openairdocs.org/ntsb/DEN06LA037), Jan 31, 2006: Interstate S-1A (N28315), Rocky Ford, CO, substantial damage. Probable cause: the pilot's failure to use tie downs before attempting to hand-start the engine. A contributing factor was his failure to seek adequate assistance. - [NTSB ANC05LA073](https://openairdocs.org/ntsb/ANC05LA073), May 7, 2005: Interstate S-1A (N37209), Palmer, AK, substantial damage. Probable cause: The pilot's misjudged distance and speed, which resulted in an overrun during the landing roll, and subsequent nose over. Factors contributing to the accident were a tailwind and a short landing area. - [NTSB FTW95LA089](https://openairdocs.org/ntsb/FTW95LA089), Jan 12, 1995: Interstate S-1A (N37239), Amarillo, TX, destroyed. Probable cause: AN INFLIGHT FIRE, THE REASON FOR WHICH WAS UNDETERMINED. - [NTSB ANC89LA104](https://openairdocs.org/ntsb/ANC89LA104), Jun 27, 1989: Interstate S-1A (N37209), Iliamna, AK, substantial damage. Probable cause: PILOT FAILED TO MAINTAIN DIRECTIONAL CONTROL DURING THE ATTEMPTED GO-AROUND. FACTORS IN THE ACCIDENT WERE THE ROUGH/UNEVEN TERRAIN AND THE BRUSH BESIDE THE RUNWAY. - [NTSB DEN85LTM05](https://openairdocs.org/ntsb/DEN85LTM05), Aug 1, 1985: Interstate S-1A (N37438), Rock Springs, WY, substantial damage - [NTSB DEN84LA006](https://openairdocs.org/ntsb/DEN84LA006), Oct 11, 1983: Artic S-1A Cadet (N37286), Fullerton, ND, substantial damage - [NTSB OAK77FVM28](https://openairdocs.org/ntsb/OAK77FVM28), Sep 14, 1977: Interstate S1A (N28318), Monterey, CA, substantial damage - [NTSB MKC76DCQ36](https://openairdocs.org/ntsb/MKC76DCQ36), Feb 28, 1976: Interstate S-1A (N37377), Spivey, KS, substantial damage - [NTSB OAK74FJA05](https://openairdocs.org/ntsb/OAK74FJA05), Oct 21, 1973: Interstate S-1 (N37328), No.Pacific Ocean (Pacific Ocean), destroyed - [NTSB SEA72FYC41](https://openairdocs.org/ntsb/SEA72FYC41), May 14, 1972: Interstate S-1A (N37216), Cascade Lock, OR, destroyed - [NTSB DEN69A0012](https://openairdocs.org/ntsb/DEN69A0012), Sep 16, 1968: Interstate S-1A (N37455), Bitter Creek, WY, destroyed, 1 fatal - [NTSB FTW69F0039](https://openairdocs.org/ntsb/FTW69F0039), Jul 2, 1968: Harlow S-1A (N37205), Muenster, TX, substantial damage - [NTSB DEN67D0237](https://openairdocs.org/ntsb/DEN67D0237), Mar 7, 1967: Interstate S-1A (N37307), Afton, WY, substantial damage - [NTSB SEA67F0156](https://openairdocs.org/ntsb/SEA67F0156), Aug 7, 1966: Interstate S-1A (N37236), Pt.Townsend, WA, destroyed - [NTSB DEN66D0304](https://openairdocs.org/ntsb/DEN66D0304), Apr 26, 1966: Interstate S-1A (N37307), Fontenelle, WY, substantial damage - [NTSB SEA66A0009](https://openairdocs.org/ntsb/SEA66A0009), Aug 8, 1965: Callair S-1A (N37261), 8sw Billings, MT, substantial damage, 1 fatal - [NTSB DEN65F0041](https://openairdocs.org/ntsb/DEN65F0041), Mar 16, 1965: 2nterstate S-1A (N37292), Stanfield, AZ, substantial damage - [NTSB UNK64X3520](https://openairdocs.org/ntsb/UNK64X3520), Aug 21, 1964: Interstate S1A (N37341), Grace, ID, substantial damage ## FAA accident and incident reports (22) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 20250811016399I](https://openairdocs.org/incident/20250811016399I), Aug 11, 2025: Interstate S-1A (N37205), Soldotna, AK, Minor damage. On 11 aug 2025 at 13:42 local, aircraft N37205 was landing on gravel rwy 07 at Soldotna Airport when it began to ground loop. The aircraft went airborne… - [Incident 20180324010059I](https://openairdocs.org/incident/20180324010059I), Mar 24, 2018: Interstate S-1A (N37428), Lancaster, CA, Minor damage. During the airshow performance, the pilot was attempting to perform a stunt that involved landing on a platform on top of a moving truck. During gusty wind… - [Incident 20130630015399I](https://openairdocs.org/incident/20130630015399I), Jun 30, 2013: Interstate S-1A (N28319), Nenana, AK, Minor damage. Pilot attempted to switch fuel tanks but fuel did not flow from the full tank. - [Accident 20100501033709A](https://openairdocs.org/incident/20100501033709A), May 1, 2010: Interstate S-1A (N34926), N. Lakeland, FL, Substantial damage. Aircraft hit its right wing on a tree went through a barb wire fence and impacted the ground. There was not any evidence that there was flight control or… - [Accident 20060801018769A](https://openairdocs.org/incident/20060801018769A), Aug 1, 2006: Arctic S1AARCTIC (N28332), Buckeye, AZ, Substantial damage. (-23) "On Tuesday, August 1, 2006 I took off from pierce aviation about 4:25 pm. I flew about 6 miles west to palo verde, at about 4:30 pm I lost elevator… - [Accident 20060131001599A](https://openairdocs.org/incident/20060131001599A), Jan 31, 2006: Arctic S1AARCTIC (N28315), Rocky Ford, CO, Substantial damage. (-23) PIC attempted to hand prop the engine. Another person assisted by holding on to the rail. Pilot stated a gust of wind startled the person holding the… - [Accident 20050507011359A](https://openairdocs.org/incident/20050507011359A), May 7, 2005: Arctic S1AARCTIC (N37209), Wasilla, AK, Substantial damage. (-23) According to the pilot, after touchdown the aircraft bounced and floated. The airman applied full engine power, however the aircraft did not seem to want… - [Incident 20030823023869I](https://openairdocs.org/incident/20030823023869I), Aug 23, 2003: Arctic S1A65F (N37428), Valparaiso, IN, Minor damage. (-23) During an airshow performance at vpz aircraft was to do a simulated single wheel touch down after completing a diving maneuver. The left main wheel… - [Accident 19950112000439A](https://openairdocs.org/incident/19950112000439A), Jan 12, 1995: Arctic S1AARCTIC (N37239), Amarillo, TX, Destroyed. Smoke and flames in cockpit under front floor boards. Force landed. Orgin unknown. Possible exhaust defect. - [Incident 19930131006239I](https://openairdocs.org/incident/19930131006239I), Jan 31, 1993: Harlow S1CADET (N37234), Happy Camp, CA, Substantial damage. Student hand prop aircraft due to low battery. Full throttle. Aircraft ran into trees. - [Incident 19920723034659I](https://openairdocs.org/incident/19920723034659I), Jul 23, 1992: Arctic S1AARCTIC (N37451), Helena, MT, Minor damage. While taxiing from runway to ramp a wind gust tipped the aircraft up on its nose. - [Incident 19911212059509I](https://openairdocs.org/incident/19911212059509I), Dec 12, 1991: Arctic S1AARCTIC (N37327), Palmer, AK, Minor damage. Pilot made a hard landing. Occupants stated white out conditions caused pilot to misjudge runway beneath him. - [Accident 19890627017709A](https://openairdocs.org/incident/19890627017709A), Jun 27, 1989: Arctic S1AARCTIC (N37209), Iliamna, AK, Substantial damage. Hit a bump on runway during a go around attempt causing a wing to hit brush. The aircraft nosed over. - [Incident 19890528012919I](https://openairdocs.org/incident/19890528012919I), May 28, 1989: Arctic S1AARCTIC (N37317), San Ardo, CA, Minor damage. Accidentally flew into the salinas river. Wheels struck the water and aircraft flipped over. - [Accident 19850801035389A](https://openairdocs.org/incident/19850801035389A), Aug 1, 1985: Arctic S1AARCTIC (N37438), Rock Springs, WY, Substantial damage. Aircraft with limited power encountered turbulence, descended into field and flipped over. High density altitude. - [Incident 19850527037509I](https://openairdocs.org/incident/19850527037509I), May 27, 1985: Arctic S1AARCTIC (N37438), La Verne, CA, Minor damage. On final phase of rollout left gear folded outward. Found main aft drag brace support tube collapsed. - [Incident 19841006063889I](https://openairdocs.org/incident/19841006063889I), Oct 6, 1984: Piper PA34200T (N3423M), Port Huron, MI, Minor damage. While taxiing. Wingtip struck prop spinner of a parked aircraft. - [Incident 19840222025339I](https://openairdocs.org/incident/19840222025339I), Feb 22, 1984: Piper PA22150 (N37385), Wasilla, AK, Minor damage. Landed on a snowplowed area on a frozen lake. Encountered soft snow. Lost control and overturned in a snowbank. - [Accident 19831011057179A](https://openairdocs.org/incident/19831011057179A), Oct 11, 1983: Arctic S1AARCTIC (N37286), Fullerton, ND, Substantial damage. Struck trees on attempted soft field upgrade and crosswind take off. Was unable to accelerate after liftoff. - [Accident 19770914028639A](https://openairdocs.org/incident/19770914028639A), Sep 14, 1977: Arctic S1AARCTIC (N28318), Monterey, CA, Substantial damage. Hand propping,no chocks. - [Accident 19760228003219A](https://openairdocs.org/incident/19760228003219A), Feb 28, 1976: Arctic S1AARCTIC (N37377), Spivey, KS, Substantial damage. Wing dropped as plt started turn to r.alt EST 200-400 ft AGL. - [Accident 19731021035099A](https://openairdocs.org/incident/19731021035099A), Oct 21, 1973: Harlow S1CADET (N37328), No.Pacific Ocea, HI, Destroyed. Attmptd ovr water flt with erratic compass,VOR rcvr & radio xmtr inop. Became lost,pwr ditching. ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Security National Acft S1-A](https://openairdocs.org/model/security-national-acft-s1-a): 0 registered aircraft, registry code 0620303 - [Callair S-1A](https://openairdocs.org/model/callair-s-1a): 0 registered aircraft, registry code 1850210 - [Pitts S-1A](https://openairdocs.org/model/pitts-s-1a): 0 registered aircraft, registry code 72201PH - [Pitts Special S-1-A](https://openairdocs.org/model/pitts-special-s-1-a): 0 registered aircraft, registry code 72202V7 --- From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.