Aircraft STC directory

Continental Motors IO-520-A STCs

The Jun 30, 2026 FAA DRS snapshot contains 9 selected supplemental type certificates with status Current whose public applicability data names the Continental Motors IO-520-A. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

listed Current at snapshot

holder directories

modification categories

May 4, 2021

latest recorded revision

Modification demand surface

Other aircraft modifications6 Engine and powerplant3

Recorded holders

B & B Aviation LLC2 Vitatoe Aviation LLC1 Airwolf Filter Corporation1 Western Skyways Aircraft Modifications Inc.1 Air Comm Corporation1 Continental Motors, Inc.1 General Aviation Modifications Inc.1

Recently revised IO-520-A STCs

Showing the 9 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SE03704ATEngine and powerplantRevised May 4, 2021

Convert Continental Motors IO-520-A, -D, -E, -F and -L engine to Vitatoe Aviation, LLC IO-520-A-CF, -D-CF, -E-CF, -F-CF or -L-CF engine in accordance with Master Parts List PL2008-7 Rev. C dated August 2, 2018 or later FAA approved revision and Assembly Instructions PL2008-13 Rev C. dated August 2, 2018 or later FAA approved revision.

FAA holder: Vitatoe Aviation LLC

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SE94WEOther aircraft modificationsRevised Jul 16, 2020

Installation of oil fitting(AN-823-5D) in rocker box cover.

FAA holder: Airwolf Filter Corporation

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SE0417CHOther aircraft modificationsRevised Oct 22, 2019

Turbo-normalization.

FAA holder: Western Skyways Aircraft Modifications Inc.

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SE00115SEOther aircraft modificationsRevised Aug 23, 2019

Replaces Teledyne-Continental Part Number 646277 lifter bodies.

FAA holder: B & B Aviation LLC

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SE5784NMOther aircraft modificationsRevised Aug 23, 2019

Replacement of Teledyne Continental original camshaft.

FAA holder: B & B Aviation LLC

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SE03415CHEngine and powerplantRevised Jul 31, 2019

The turbo-normalization of Continental Motors engine models IO-520-A, -F, -J, and -L, TSIO-520-C, -G, -H, -M, and -R, and IO-550-F and L for installation into Cessna 206, 207 & 210 aircraft.

FAA holder: DERS Group Svc LLC

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SE70RMOther aircraft modificationsRevised Jul 2, 2019

Installation of compressor bracket.

FAA holder: Air Comm Corporation

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SE1186SWOther aircraft modificationsRevised Oct 31, 2016

Regrooving of pistons P/N 631475 or P/N 632585.

FAA holder: Continental Motors, Inc.

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SE09979SCEngine and powerplantRevised Dec 31, 2015

Modification of Teledyne Continental Motors IO-520-B, IO-520-BA, or IO-520-BB engine to an Ultimate Engines IO-550-B/UE engine.

FAA holder: General Aviation Modifications, Inc.

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