# STC SA814SO - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Staggerwing Museum Foundation Inc., United States - Description: Installation of wing spar strap Kit No. K7312. - Applied: May 22, 1974 - Status date: October 6, 2006 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS A-684](https://openairdocs.org/tcds/A-684), [TCDS A-757](https://openairdocs.org/tcds/A-757) - Certificate PDF: https://openairdocs.org/files/sha256/c3/51/c3513065b808e578d90403b5ec6d1006b94e74ca82702c9362a37e73b753565b - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/10666499897EA440862574F10074F12A.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA814SO ## ADs that name it (1) - [AD 75-27-09 R2](https://openairdocs.org/ad/75-27-09-R2): Wing Structure ยท Textron 18A, 18D, 18S (Army C-45C) and 27 more. Effective Aug 21, 1980. Cited in the text ## Approved models (7) - Hawker Beechcraft Corporation 18D ([TCDS A-684](https://openairdocs.org/tcds/A-684)) - Hawker Beechcraft Corporation A18A ([TCDS A-684](https://openairdocs.org/tcds/A-684)) - Hawker Beechcraft Corporation A18D ([TCDS A-684](https://openairdocs.org/tcds/A-684)) - Hawker Beechcraft Corporation C18S ([TCDS A-757](https://openairdocs.org/tcds/A-757)) - Hawker Beechcraft Corporation S18D ([TCDS A-684](https://openairdocs.org/tcds/A-684)) - Hawker Beechcraft Corporation SA18A ([TCDS A-684](https://openairdocs.org/tcds/A-684)) - Hawker Beechcraft Corporation SA18D ([TCDS A-684](https://openairdocs.org/tcds/A-684)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. This certificate issued to: Staggerwing Museum Foundation, Inc. 560 Old Shelbyville Hwy Tullahoma, TN 37388 Part 3* of the Civil Air Regulations. * effective 11/01/49 as amended through 3-14. Original Product - Type Certificate Number : A684, A757, A7865 Make : Beech Model : 18 Series (includes all models except seaplane and tricycle gear configurations) Install Airline Training, Inc. Kit No. K7312 Spar Strap System (reference Drawing List No. 7312, dated 08/09/74, or later FAA approved revision) in accordance with Installation Instructions, Document 7312, dated 08/29/74, or later FAA approved revision. The approval of this change in type design applies basically to Beech 18 series airplanes only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon airworthiness of that aircraft. This determination should include consideration of significant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. Date reissued : February 26, 1990; October 6, 2006 Date amended : February 13, 1975 Original signed by Robert D. Adamson ( Signature) Robert D. Adamson Program Manager Wichita Aircraft Certification Office (Title) Date of application : May 22, 1974 Date of issuance : December 12, 1974 ## Every issue (1) - October 6, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c3/51/c3513065b808e578d90403b5ec6d1006b94e74ca82702c9362a37e73b753565b) --- 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.