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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.

FAA-listed holder
D'Shannon Products Ltd.
Aircraft configurations
3
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

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.

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.

Teledyne Continental Motors IO-520-CE5CETeledyne Continental Motors IO-520-BE5CETeledyne Continental Motors IO-520-BAE5CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Teledyne Continental Motors IO-520-C and Teledyne Continental Motors IO-520-B, and 1 more aircraft configuration model, serial range, and configuration?
  2. 02Which tanks, plumbing, usable-fuel assumptions, and inspections apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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