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Avionics

STC ST04457NY

FAA DRS lists ST04457NY as Current · Issued, held by Executive Air Craft Ltd, for Learjet 36A. Recorded change: Installation of the Honeywell CAS 67A TCAS II / Dual MST 67A Mode S Transponder Upgrade. Snapshot dated June 30, 2026.

FAA-listed holder
Executive Air Craft Ltd
Aircraft configurations
1
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of the Honeywell CAS 67A TCAS II / Dual MST 67A Mode S Transponder Upgrade.

ST04457NY 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: Learjet 36A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet 36AA10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet 36A 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?

Related avionics STCs

ST04219ATAvionics

Version 7.1 Software upgrade of the Aviation Communication & Surveillance Systems (ACSS) TCAS II, Model TCAS 2000, P/N 7517900-10020 (Configuration 1) or Model T2CAS, P/N 9000000-11414 (Configuration 2). This upgrade allows for the installation of Configuration 1 TCAS II. The installation also includes a Mode S ATC Transponder System with ADS-B Out, Model XS-950, P/N 7517800- 10400.

FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC

View record