SA04400NYElectrical systems
Installation of the Integrated Back-up Battery System (IBBS).
FAA holder: TCW Technologies LLC
Aircraft STC directory
The Jun 30, 2026 FAA DRS snapshot contains 5 selected supplemental type certificates with status Current whose public applicability data names the DAHER AEROSPACE TB 21. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
Showing the 5 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
FAA holder: TCW Technologies LLC
FAA holder: General Aviation Modifications Inc.
FAA holder: Honeywell International Inc. (Bendix King)
FAA holder: Honeywell International Inc
FAA holder: Honeywell International Inc