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Other aircraft modifications

STC ST03509AT

FAA DRS lists ST03509AT as Current · Issued, held by Avionics Group Inc., for Boeing 727 Series. Recorded change: Installation of Mode S Elementary Surveillance System. Snapshot dated June 30, 2026.

FAA-listed holder
Avionics Group Inc.
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of Mode S Elementary Surveillance System.

ST03509AT 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: Boeing 727 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 727 SeriesA3WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 727 Series model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs 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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