# STC SE994SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: D'Shannon Products Ltd., United States
- Description: Installation of fuel line filters into the individual fuel injector lines in accordance with Beryl D Shannon Aviation Specialties, Inc. Installations Instructions BI 2500, approved May 24, 1976, or later FAA approved revision.
- Applied: March 19, 1976
- Status date: July 14, 2011
- Product: Engine
- Certification basis: Part 13, Part 21
- Data sheets: [TCDS E-273](https://openairdocs.org/tcds/E-273)
- Certificate PDF: https://openairdocs.org/files/sha256/6d/53/6d532c9ffbf61339bd4075a4781e917d0a6a8f8b2bdfcb564f85118f9bbf852b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8C72FB38B9B8FB4A862578EF005CB82E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE994SO

## ADs that name it (0)

None.

## Approved models (1)

- Teledyne Continental Motors IO-470-C ([TCDS E-273](https://openairdocs.org/tcds/E-273))

## 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

Part 13 of the Civil Air Regulations.

Installation of fuel line filters into the individual fuel injector lines in accordance with Beryl D’Shannon Aviation Specialties, Inc.

Installations Instructions BI 2500, approved May 24, 1976, or later FAA approved revision.

This approval should not be extended to other engines 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 the airworthiness of that engine.

D’Shannon Products, Ltd.

1309 County Road 134 Buffalo, MN 55313 E273 Make : Teledyne Continental Motors Model : IO-470-C Date of application : March 19, 1976

Date of issuance : May 25, 1976

Date reissued : April 4, 2011; July 14, 2011

( Signature) Melvin D. Taylor Manager Atlanta Aircraft Certification Office

( Title)

## Every issue (2)

- July 14, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/6d/53/6d532c9ffbf61339bd4075a4781e917d0a6a8f8b2bdfcb564f85118f9bbf852b)
- April 4, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/cd/e9/cde9f22cd0b8a7659a170bf1b7f8b33c744ea336109e989a35ae4749e4eec44e)

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