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Electrical systems

STC ST04203AT

FAA DRS lists ST04203AT as Current · Amended, held by Avionics Support Group Inc., for Boeing 737-300 Series, Boeing 737-400 Series, and Boeing 737-500 Series, and 7 more aircraft configurations. Recorded change: Installation of a Constant Friction Mount , Cradle, and Integrated Power Supply. Snapshot dated June 30, 2026.

FAA-listed holder
Avionics Support Group Inc.
Aircraft configurations
10
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of a Constant Friction Mount , Cradle, and Integrated Power Supply.

ST04203AT 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 737-300 Series, Boeing 737-400 Series, and Boeing 737-500 Series, and 7 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-300 SeriesA16WEBoeing 737-400 SeriesA16WEBoeing 737-500 SeriesA16WEBoeing 737-600 SeriesA16WEBoeing 737-700 SeriesA16WEBoeing 737-800 SeriesA16WEBoeing 737-900 SeriesA16WEBoeing 737-8A16WEBoeing 737-9A16WEBoeing 737-900ER SeriesA16WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-300 Series and Boeing 737-400 Series, and 8 more aircraft configurations model, serial range, and configuration?
  2. 02Which load analysis, wiring changes, protection, and limitations 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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