# STC SA4913NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Spoilers Inc, United States - Description: Installation of spoiler system. - Applied: February 28, 1990 - Status date: July 9, 2013 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE) - Certificate PDF: https://openairdocs.org/files/sha256/d0/1e/d01eb140df6f5ffa051149c4acdc0e0a49e9ab7604096ada6cbd2a200e3f14ea - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/82FF929BDE9D615D86257BA50051892D.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA4913NM ## ADs that name it (0) None. ## Approved models (4) - Cessna Aircraft Company 402C ([TCDS A7CE](https://openairdocs.org/tcds/A7CE)) - Cessna Aircraft Company 414A ([TCDS A7CE](https://openairdocs.org/tcds/A7CE)) - Cessna Aircraft Company 421C ([TCDS A7CE](https://openairdocs.org/tcds/A7CE)) - Cessna Aircraft Company 425 ([TCDS A7CE](https://openairdocs.org/tcds/A7CE)) ## 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. Number SA4913NM This certificate, issued to Spoilers, Inc. 1202 26th Avenue NW Gig Harbor, WA 98335 Part 3 of the Civil Air Regulations. Original ProductType Certificate Number: A7CE Make: Cessna Model: 402C, 414A, 421C, and 425 Description of the Type Design Change: Installation of spoiler system in accordance with Installation Instructions SP4000 and Master Drawing List SP4000, both dated March 29, 1990, or later FAA approved revisions. Limitations and Conditions : Approval of this change in type design applies to the above model aircraft only. This approval should not be exteded to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate, Continuation Sheet and FAA Approved Flight Manual Supplement must be maintained as part of the permanent records for the modfied aircraft. Date of application: February 28, 1990 Date reissued: July 9, 2013 Date of issuance: March 30, 1990 Date amended: June 8, 1990, March 29,1991, April 9, 1991, June 17, 1991 (Signature) Manager, Seattle Aircraft Certification Office (Title) Number SA4913NM The following modifications are compatible with this STC: Model 402C SA927NW – STOL system installation Model 414A SA4943SW – RAM Winglet Conversion SA892NW – STOL system installation Model 421C SA438NM – STOL system installation SA4293WE – Lycomming Turbo-propeller installation SA1361SO – P & W of Canada Turbo-propeller engine installation SA5811SW – RAM Winglet Conversion -END- **FAA FORM 8110-2- 1 (10-69) PAGE 3 OF 3 PAGES** ## Every issue (2) - July 9, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d0/1e/d01eb140df6f5ffa051149c4acdc0e0a49e9ab7604096ada6cbd2a200e3f14ea) - June 17, 1991: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/79/f0/79f083eb6d0668dc7de8f7686def2097021e883309e7cb77018a975e02a9e012) --- 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.