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Fuel systems

STC SE993SO

FAA DRS lists SE993SO as Current · Reissued, held by D'Shannon Products Ltd., for Teledyne Continental Motors IO-520-C, Teledyne Continental Motors IO-520-B, and Teledyne Continental Motors IO-520-BA. Recorded change: 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. Snapshot dated June 30, 2026.

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FAA-listed holder
Aircraft configurations
3
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

SE993SO identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Teledyne Continental Motors IO-520-C, Teledyne Continental Motors IO-520-B, and Teledyne Continental Motors IO-520-BA. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

FAA record reference

STC number
SE993SO
Product
Engine
Country
United States
Application date
March 19, 1976
Revision date
July 14, 2011
CFR references
Part 21