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Other aircraft modifications

STC ST04373AT

FAA DRS lists ST04373AT as Current · Issued, held by Concorde Battery Corporation, for Boeing 737-300 Series, Boeing 737-400 Series, and Boeing 737-500 Series. Recorded change: This STC is a replacement of the original equipment nickel cadmium main batteries manufactured by Saft or Marathon with Concorde valve regulated lead acid main batteries. Snapshot dated June 30, 2026.

FAA-listed holder
Concorde Battery Corporation
Aircraft configurations
3
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

This STC is a replacement of the original equipment nickel cadmium main batteries manufactured by Saft or Marathon with Concorde valve regulated lead acid main batteries.

ST04373AT 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. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-300 SeriesA16WEBoeing 737-400 SeriesA16WEBoeing 737-500 SeriesA16WE

Buyer checks

Confirm before sourcing

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