STC ST421CH
FAA DRS lists ST421CH as Current · Reissued, held by Telair US LLC, for Boeing 747-200B Series. Recorded change: Install B747 Combi to freighter cargo handling system. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Install B747 Combi to freighter cargo handling system.
ST421CH 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 747-200B Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Boeing 747-200B Series model, serial range, and configuration?
- 02Which mission equipment, structural provisions, and limitations are approved?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related cargo and special mission STCs
Installation of a Main Deck Cargo Door.
FAA holder: Aeronautical Engineers Inc
Modification of fuselage to install camera window, with the option to allow unpressurized operations when the optical glass is removed and camera door is open.
FAA holder: Avcon Industries Inc
The installation of an internal cargo pod lighting system.
FAA holder: Aircraft Structures International Corp