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Other aircraft modifications

STC ST04058CH

FAA DRS lists ST04058CH as Current · Reissued, held by Astronics Armstrong Aerospace, for Boeing 737-300 Series, Boeing 737-400 Series, and Boeing 737-500 Series, and 8 more aircraft configurations. Recorded change: Installation and activation of an Astronics webFB System and/or Flight Deck USB UltraLite Power System (Provisions for Class 2 EFB Systems). Snapshot dated June 30, 2026.

Aircraft configurations
11
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation and activation of an Astronics webFB System and/or Flight Deck USB UltraLite Power System (Provisions for Class 2 EFB Systems).

ST04058CH 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 8 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-300 Series and Boeing 737-400 Series, and 9 more aircraft configurations 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?