# N33941: 1975 Schweizer SGS 2-33A - Status: Valid registration - Airframe: [Schweizer SGS 2-33A](https://openairdocs.org/model/schweizer-sgs-2-33a) (registry code 8051606, 2 seats) - Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000) - Data sheets: [TCDS G2EA](https://openairdocs.org/tcds/G2EA) (K & L Soaring LLC) (OpenAirDocs) - Serial number: 401 - Year built: 1975 - Type: Glider - Engine type: None - Airworthiness: Standard, glider - Airworthiness date: July 14, 1975 - Certificate issued: August 13, 1983 - Expires: February 29, 2028 - Mode S code: A3BA3C - Registered owners: [Gehrlein Rodney L](https://openairdocs.org/faa-owner/GEHRLEIN%20RODNEY%20L), [Gehrlein Jay L](https://openairdocs.org/faa-owner/GEHRLEIN%20JAY%20L) - Location: [Waterford, PA](https://openairdocs.org/faa-place/PA/Waterford) - Owner type: Co-owned - Owner's area on the map: 41.9585° N, 79.9836° W: Placed by OpenAirDocs at the center of ZIP code 16441, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=33941 - Page: https://openairdocs.org/aircraft/N33941 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. ## ADs that may apply (OpenAirDocs): 4 in force ### Matched by airframe (Schweizer SGS 2-33A) - [AD 87-17-01](https://openairdocs.org/ad/87-17-01): Tow Release Installation · K & L Soaring SGS 1-23, SGS 1-23D, SGS 1-23F and 25 more. Effective Aug 19, 1988 - [AD 76-13-11 R1](https://openairdocs.org/ad/76-13-11-R1): Aft Fuselage Longerons · K & L Soaring SGS 2-33, SGS 2-33A, SGU 2-22C and 3 more. Effective May 25, 1988 - [AD 87-02-01](https://openairdocs.org/ad/87-02-01): Tow-Release Installation Inspection · K & L Soaring SGM 2-37, SGS 1-23, SGS 1-23D and 32 more. Effective Jan 21, 1987 - [AD 77-23-10](https://openairdocs.org/ad/77-23-10): Spar Web and Bolts · K & L Soaring SGS 2-33, SGS 2-33A and SGS 2-33AK. Effective Jun 21, 1978 ### Matched by engine (NONE) None in force. ## Information bulletins (advisory) None matched. ## NTSB investigations (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB NYC78FGM49](https://openairdocs.org/ntsb/NYC78FGM49), Sep 2, 1978: Schweizer 2-33 (N33941), Freeport, PA, substantial damage ## FAA accident and incident reports (1) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 19780902032029A](https://openairdocs.org/incident/19780902032029A), Sep 2, 1978: Scwzer SGS233A (N33941), Freeport, PA, Destroyed. Glider single wheel. ## 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) (4) 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 (Schweizer SGS 2-33A) - [STC SA01734SE](https://openairdocs.org/stc/SA01734SE): Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts. Andrew D. Humphrey - [STC SG01164CH](https://openairdocs.org/stc/SG01164CH): Install Cooper superflite 102 fabric. Aviation Products Systems Inc - [STC SG1186GL](https://openairdocs.org/stc/SG1186GL): Surrendered and incorporated into STC SG01164CH. Cooper Aviation Supply Company, Inc - [STC SG305GL](https://openairdocs.org/stc/SG305GL): Install full swivel tail wheel, Cronig P/N SK-1, utilizing existing mounting points, bolts and hardware. Cronig Alvin ## Earlier aircraft with N33941 The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N33941 before. - [Cancelled 1948-08-25](https://openairdocs.org/deregistered/N33941-1948-08-25): Taylorcraft BL-65, S/N 2791. Owner: [Harvey Ray Pardum](https://openairdocs.org/faa-owner/HARVEY%20RAY%20PARDUM), [Webster, WI](https://openairdocs.org/faa-place/WI/Webster) ## Related - Other Schweizer SGS 2-33A aircraft: https://openairdocs.org/model/schweizer-sgs-2-33a/aircraft.md - The NONE engine: https://openairdocs.org/engine/none.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.