Aircraft STC directory

Textron Aviation DH.125 Series 400A STCs

The Jun 30, 2026 FAA DRS snapshot contains 4 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation DH.125 Series 400A. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

listed Current at snapshot

holder directories

modification categories

Apr 1, 2025

latest recorded revision

Modification demand surface

Other aircraft modifications3 Avionics1

Recorded holders

Acron Aviation Inc.1 BHE & Associates LTD1 Blackhawk Aerospace Technologies Inc.1 Associated Air Center, Inc. - c/o CT Corporation System1

Recently revised DH.125 Series 400A STCs

Showing the 4 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

ST316CHOther aircraft modificationsRevised Apr 1, 2025

Installation of a TCAS791/791A Traffic alert and collision avoidance system I (TCAS I).

FAA holder: Acron Aviation Inc.

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ST11285DSOther aircraft modificationsRevised Jun 24, 2022

An update to the existing Collins Aerospace Integrated Flight Information System (IFIS) FSU-5010 and upgrade the existing XMWR-1000 to a XMWR-1000S (Sirius XM) in Part 25.

FAA holder: BHE & Associates Ltd.

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ST01084WIOther aircraft modificationsRevised May 18, 2021

Installation of Collins TCAS-4000 TCAS II System (with or without optional Avidyne Flight Max 800 MDF).

FAA holder: Blackhawk Aerospace Technologies Inc.

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SA2728SWAvionicsRevised Jan 18, 2018

Installation of Global GNS-500A Omega/VLF System for Secondary Navigation.

FAA holder: Associated Air Center, Inc. - c/o CT Corporation System

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