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Other aircraft modifications

STC ST04402CH

FAA DRS lists ST04402CH as Current · Amended, held by Envoy Aerospace LLC, for Boeing 737-900ER Series, Boeing 737-700 Series, and Boeing 737-800 Series, and 1 more aircraft configuration. Recorded change: Installation of Kidde Halotron BrX portable fire extinguishers to replace existing Halon 1211 fire extinguishers. Snapshot dated June 30, 2026.

FAA-listed holder
Envoy Aerospace LLC
Aircraft configurations
4
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of Kidde Halotron BrX portable fire extinguishers to replace existing Halon 1211 fire extinguishers.

ST04402CH 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 737-900ER Series, Boeing 737-700 Series, and Boeing 737-800 Series, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-900ER SeriesA16WEBoeing 737-700 SeriesA16WEBoeing 737-800 SeriesA16WEBoeing 737-900 SeriesA16WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-900ER Series and Boeing 737-700 Series, and 2 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?

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