# N7558: 1970 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: 188 - Year built: 1970 - Type: Glider - Engine type: None - Airworthiness: Standard, glider - Airworthiness date: June 29, 1970 - Certificate issued: January 3, 2025 - Expires: January 31, 2032 - Mode S code: AA300C - Registered owner: [Grand Canyon Flyers LLC](https://openairdocs.org/faa-owner/GRAND%20CANYON%20FLYERS%20LLC) - Location: [Flagstaff, AZ](https://openairdocs.org/faa-place/AZ/Flagstaff) - Owner type: LLC - Owner's area on the map: 35.3809° N, 111.3735° W: Placed by OpenAirDocs at the center of ZIP code 86004, within about 17 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7558 - Page: https://openairdocs.org/aircraft/N7558 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 (3) 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 LAX87LA035](https://openairdocs.org/ntsb/LAX87LA035), Nov 9, 1986: Schweizer SGS2-33A (N7558), Sun City, AZ, substantial damage - [NTSB LAX84LA037](https://openairdocs.org/ntsb/LAX84LA037), Oct 23, 1983: Schweizer SGS 2-33A (N7558), New River, AZ, substantial damage - [NTSB LAX74FUJ70](https://openairdocs.org/ntsb/LAX74FUJ70), Jun 17, 1974: Schweizer SGS233 (N7558), Phoenix, AZ, substantial damage ## FAA accident and incident reports (3) 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 19861109058879A](https://openairdocs.org/incident/19861109058879A), Nov 9, 1986: Scwzer SGS233A (N7558), Sun City, AZ, Substantial damage. Wingtip struck an arm of a saguaro cactus during landing approach. Student encountered a loss of lift in pattern. - [Accident 19831023056119A](https://openairdocs.org/incident/19831023056119A), Oct 23, 1983: Scwzer SGS233A (N7558), New River, AZ, Substantial damage. Student glider pilot allowed right wing to collide with bush which caused ground loop into tree. - [Accident 19740617018769A](https://openairdocs.org/incident/19740617018769A), Jun 17, 1974: Scwzer SGS233A (N7558), Phoenix, AZ, Substantial damage. Single wheel glider ## Reports on N7558 not matched to an aircraft (1) They name N7558, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [Incident 19790212007389I](https://openairdocs.org/incident/19790212007389I), Feb 12, 1979: Boeing 727 (N7558), Cleveland, OH. Smoke in cockpit and cabin. Replaced intercompressor bleed valve control. Pn NR75314. ## 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 N7558 The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N7558 before. - [Cancelled 1930-09-06](https://openairdocs.org/deregistered/N7558-1930-09-06): Pitcairn PA-4, S/N 8. Owner: [Pitcairn Aviation Of Pennsylvania Inc](https://openairdocs.org/faa-owner/PITCAIRN%20AVIATION%20OF%20PENNSYLVANIA%20INC), [Willow Grove, PA](https://openairdocs.org/faa-place/PA/Willow%20Grove) ## 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.