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Avionics

STC ST02539LA

FAA DRS lists ST02539LA as Current · Issued, held by Aviation Communication and Surveillance Systems (ACSS) LLC, for Airbus A321-111, Airbus A321-112, and Airbus A321-131, and 5 more aircraft configurations. Recorded change: Upgrade of TCAS, Transponder and Activation of NextGen ADS-B Out. Snapshot dated June 30, 2026.

FAA-listed holder
Aviation Communication and Surveillance Systems (ACSS) LLC
Aircraft configurations
8
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Upgrade of TCAS, Transponder and Activation of NextGen ADS-B Out.

ST02539LA 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: Airbus A321-111, Airbus A321-112, and Airbus A321-131, and 5 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Airbus A321-111A28NMAirbus A321-112A28NMAirbus A321-131A28NMAirbus A321-211A28NMAirbus A321-212A28NMAirbus A321-213A28NMAirbus A321-231A28NMAirbus A321-232A28NM

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Airbus A321-111 and Airbus A321-112, and 6 more aircraft configurations model, serial range, and configuration?
  2. 02Which part numbers, software versions, interfaces, and manual changes 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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