# STC SE0417CH - Type: Supplemental type certificate - Status: Current, Amended - Holder: Western Skyways Aircraft Modifications Inc., United States - Description: Turbo-normalization - Applied: September 25, 2016 - Status date: October 22, 2019 - Product: Engine - Certification basis: Part 21 - Data sheets: [TCDS E8CE](https://openairdocs.org/tcds/E8CE), [TCDS E5CE](https://openairdocs.org/tcds/E5CE), [TCDS E3SO](https://openairdocs.org/tcds/E3SO) - Certificate PDF: https://openairdocs.org/files/sha256/25/06/2506bd13fb197584f4fc057495551758fc2de261b4efb2ded4b7609e0f1e8872 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A720B92BDABDB48C8625849D00720D0D.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SE0417CH ## ADs that name it (0) None. ## Approved models (11) - Continental Motors IO-520-A ([TCDS E5CE](https://openairdocs.org/tcds/E5CE)) - Continental Motors IO-520-F ([TCDS E5CE](https://openairdocs.org/tcds/E5CE)) - Continental Motors IO-520-J ([TCDS E5CE](https://openairdocs.org/tcds/E5CE)) - Continental Motors IO-520-L ([TCDS E5CE](https://openairdocs.org/tcds/E5CE)) - Continental Motors IO-550-F ([TCDS E3SO](https://openairdocs.org/tcds/E3SO)) - Continental Motors IO-550-L ([TCDS E3SO](https://openairdocs.org/tcds/E3SO)) - Continental Motors Inc TSIO-520-C ([TCDS E8CE](https://openairdocs.org/tcds/E8CE)) - Continental Motors Inc TSIO-520-G ([TCDS E8CE](https://openairdocs.org/tcds/E8CE)) - Continental Motors Inc TSIO-520-H ([TCDS E8CE](https://openairdocs.org/tcds/E8CE)) - Continental Motors Inc TSIO-520-M ([TCDS E8CE](https://openairdocs.org/tcds/E8CE)) - Continental Motors Inc TSIO-520-R ([TCDS E8CE](https://openairdocs.org/tcds/E8CE)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SEDAITCH This certificate issued to: Western Skyways Aircraft Modifications, Inc. • 140 Industrial Drive Burlington, WI 53105 furt 33 of the Federal Aviation •Reguliens. (See Type Certificate Data Sheet No. ESCE, ESCE and E3SO for complete certification basis) Original Product Type Certificate Number : ESCE, ESCE and E3SO Make: Continental Motors Model: 10-520-A, -F. -J, and -L, TSIO-520-C. -G. -H. -M, and -R. and 10- 550-F and -L Description of Type Design Change: The turbo-normalization of Continental Motors engine models 10-520-A. -F. -J. and -L, TSIO-520-C. -G. -H, -M, and -R., and 10- 550-F and -L. I. The installer must determine whether this design change is compatible with previously approved modifications. 2. This conversion is to be performed per Master Data List MDL for ENGINE ASSEMBLY TSIO-550-F. L (TN). TSIO-520- A. C. F. G, H. J, L, M, R (TN), report number WS202001, revision B, dated February 1, 2017, or later FAA approved revision. If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the other person written evidence of that permission. baministrater of the Federal Grintica Administratico. Lufe c/ application : September 25, 2016 Date Reissued: Lute c/ issuunce : February 6, 2017 Dule umended: October 22,2019 By Direction of the Administrator * M. Talleran (Signature) TOMNISTRATIO Roy E. Boffo III Manager, Propulsion and Program Management Section Chicago ACO Branch (Title) 4 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA01211CH This certificate issued to: Western Skyways Aircraft Modifications, Inc. 140 Industrial Drive Burlington, WI 53105 : Purt 23 of the Federal Aviation Reynwicus. (See Type Certificate Data Sheet No. A4CE, A16CE and 3A21 for complete certification basis) Original Product - Type Cerlifieute Number: AACE, A16CE and 3A21 Make: Textron Aviation Inc. Model: 206, P206, A, B, C, D, E, U206, A, B, C, D. E. F. G, 207, A, 210D, E. P, G, H, J, K, L, M, N. R, TP206A, B, C. D. E, TU206A. B. C. D, E, F. Description of Type Design Change: G, T207, T207A, T210F. G, H, J, K, L, M, N The installation of a turbo normalize Continental engine IO 520 and 10-550 into the Textron Aviation Inc. 206, 207 & 210 aircraft listed in the Model list per Master Data List MDL for Cessna (206() (TN). (207) (TN) and ()210() (TN) Aircraft with TSIO-520- TN mod. (AFGHLM) or TSIO-550-TN mod. (FL) Installed, report number WS203001, revision D. dated June 17, 2017 or later FAA approved revision.. Limitations und Genditicas: The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the other person written evidence of that permission. FAA Approved Airplane Flight Manual Supplement, Cessna 206, 207 & 210 TN Airplane Flight Manual Supplement and Pilot's Operating Handbook Supplement, Revision A, approved July 20, 2017 or later FAA approved revision is required with this modification. Administrater of the Federal Aviation Administration . Lute c/ applientien : September 25,2016 Date Reissued: Lule o/ issunce : July 20, 2017 Dule unended: October 22,2019 FEDERAL AVIATION ircetion of the Administrater - Salisuan (Signature) TOMINISTRATIO of Manager, Propulsion and Program Management Section Roy E. Boffo III Chicago ACO Branch (Title) ## Every issue (2) - October 22, 2019: Amended, Current. [certificate](https://openairdocs.org/files/sha256/25/06/2506bd13fb197584f4fc057495551758fc2de261b4efb2ded4b7609e0f1e8872) - February 6, 2017: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/d6/ad/d6adeacc4e4ee1ab9f3465f6e5520e3ab4c516b66f64258563228a1711e67ebe) --- 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.