# STCs that may be installed: Raytheon DH 125-400A

A list on [Raytheon DH 125-400A](https://openairdocs.org/model/raytheon-dh-125-400a.md).

In force first, then newest. The registry doesn’t record which STCs an aircraft has.

Page 1 of 3 · 126 STCs

- [STC ST01305WI-D](https://openairdocs.org/stc/ST01305WI-D.md): Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation in accordance with Collins Drawing Index as listed on AML No. ST01305WI-D, Revision -, or later FAA approved revision. · Rockwell Collins Inc
- [STC ST12461IB](https://openairdocs.org/stc/ST12461IB.md): Installation of Cockpit Voice Recorder with optional RIPS Upgrade · Mid- Canada Mod Center
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT.md): Installation of an Avionica, Inc. avCM Cellular Module · Aircraft Systems and Manufacturing Inc.
- [STC ST316CH](https://openairdocs.org/stc/ST316CH.md): Installation of a TCAS791/791A Traffic alert and collision avoidance system I (TCAS I). · Acron Aviation Inc.
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT.md): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII · Aircraft Systems and Manufacturing Inc.
- [STC ST11285DS](https://openairdocs.org/stc/ST11285DS.md): 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. · BHE & Associates Ltd.
- [STC ST01930LA](https://openairdocs.org/stc/ST01930LA.md): Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI) · Sandel Avionics LLC
- [STC ST01084WI](https://openairdocs.org/stc/ST01084WI.md): Installation of Collins TCAS-4000 TCAS II System (with or without optional Avidyne Flight Max 800 MDF). · Blackhawk Aerospace Technologies Inc.
- [STC ST01085WI](https://openairdocs.org/stc/ST01085WI.md): Installation of Honeywell MK VIII Enhanced Ground Proximity Warning System (EGPWS) (with/without optional Avidyne Flight Max 800 MFD). · Blackhawk Aerospace Technologies Inc.
- [STC ST04177AT](https://openairdocs.org/stc/ST04177AT.md): Installation of a Talon Aerospace LED Replacement General Purpose Lamps · Aaxico Technical Services Inc.
- [STC ST04340NY](https://openairdocs.org/stc/ST04340NY.md): Installation of TCAS 7.1 (ACAS II) upgrade of Prior Existing TCAS 7.0 · Scandinavian Avionics Design ApS
- [STC ST02068CH](https://openairdocs.org/stc/ST02068CH.md): Install air ambulance conversion · Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC ST00373BO](https://openairdocs.org/stc/ST00373BO.md): Installation of Rockwell Collins TDR-94D Transponders with ADS-B Out · Pro Star Aviation, LLC
- [STC SA2728SW](https://openairdocs.org/stc/SA2728SW.md): Installation of Global GNS-500A Omega/VLF System for Secondary Navigation · Associated Air Center, Inc. - c/o CT Corporation System
- [STC ST11071SC](https://openairdocs.org/stc/ST11071SC.md): Demonstration of aircraft critical equipment and antenna systems tolerance of radio frequency interference (RFI) from intentional or spurious transmissions from certain Portable Electronic Devices (PEDs) · Liberty Partners Inc
- [STC ST00304WI](https://openairdocs.org/stc/ST00304WI.md): Installation of Keddeg Company 21BC113 coaleser assembly. · Purolator Facet, Inc
- [STC ST01228WI](https://openairdocs.org/stc/ST01228WI.md): Replacement of OEM window pane assemblies with Lee Aerospace laminated window assembly and termination of OEM dry air system · Lee Aerospace, Inc.
- [STC ST02632LA](https://openairdocs.org/stc/ST02632LA.md): Modification to replace the existing Mode S Transponder system with ACSS NXT-700 Mode S Transponder with ADS-B Out and optionally install ACSS NXG-900 GPS as a position source for ADS-B Out · Aviation Communications and Surveillance Systems
- [STC ST02609LA](https://openairdocs.org/stc/ST02609LA.md): Modification to replace the existing Mode S Transponder system with ACSS NXT-700 Mode S Transponder with ADS-B Out · Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC ST00780WI-D](https://openairdocs.org/stc/ST00780WI-D.md): Modification of Collins VHF-22A/VHF-22B VHF COMM Receiver Transmitter with CTL-22 Control Pro Line II System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System Installation. · Textron Aviation Inc
- [STC ST00781WI-D](https://openairdocs.org/stc/ST00781WI-D.md): Modification of Collins VHF-20/VHF-20A/VHF-20B VHF COMM Receiver Transmitter with CTL-20 Control Pro Line I System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System Installation. · Textron Aviation Inc
- [STC ST03776NY](https://openairdocs.org/stc/ST03776NY.md): Modification to upgrade existing Rockwell Collins TCAS (Model: TTR-920, TTR-921, and TTR-4000) at VERSION 7.0 to Rockwell Collins TCAS (Model: TTR-921, TTR-4000, and TTR-4100) at VERSION 7.1 (ACAS II) · Scandinavian Avionics Design ApS
- [STC SA1002CE](https://openairdocs.org/stc/SA1002CE.md): Relocation of warning cancel switch from instrument panel to #1 engine power lever. · Textron Aviation Inc
- [STC ST01560CH](https://openairdocs.org/stc/ST01560CH.md): Install Aero Medical Products Mfg., Inc. Air Ambulance Stretcher P/N 125 using Installation Kit P/N 805. · Paul/ Lanna Egan LLC
- [STC ST01809LA](https://openairdocs.org/stc/ST01809LA.md): Installation of Hawker PN 9750W0640 Sealed Lead Acid Battery. · Securaplane Technologies
- [STC ST01675WI](https://openairdocs.org/stc/ST01675WI.md): Modification of a Rockwell Collins, Inc. File Server Unit (FSU) installation · Rockwell Collins Inc
- [STC ST546CH-D](https://openairdocs.org/stc/ST546CH-D.md): Installation of an AlliedSignal Avionics, Dual GNS-XLS, Flight Management System with GPS as a primary means of navigation · Standard Aero
- [STC SA2404WE](https://openairdocs.org/stc/SA2404WE.md): Consolidation of STC s SA355CE and SA362CE into one STC having a Master Eligibility List and amendment of these STC s to include and improved Power Supply Assembly and Subchassis Timer Assembly for the Twilighter MK III high intensity supplementary lighting system in accordance with the applicable FAA sealed drawing listed on the attached sealed Master Eligibility List Number SA2404WE. · BF Goodrich Aerospace
- [STC SA355CE](https://openairdocs.org/stc/SA355CE.md): : Installation of Hoskins Twilighter MK/III B High Intensity Lighting System · BF Goodrich Aerospace
- [STC ST01380LA](https://openairdocs.org/stc/ST01380LA.md): Installation of Diamond J, Inc. Engine Indicators N1, N2, and ITT. · Gulfstream-California Inc.
- [STC ST00673WI-D](https://openairdocs.org/stc/ST00673WI-D.md): Modification of Collins VHF-22A/VHF-22B VHF COMM Receiver Transmitter with CTL-22 Control Pro Line II System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System installation. · Rockwell Collins Inc
- [STC ST00682WI-D](https://openairdocs.org/stc/ST00682WI-D.md): Modification of Collins VHF-20/VHF-20A/VHF-20B VHF COMM Receiver Transmitter with CTL-20 Control Pro Line I System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System Installation in accordance with Collins Installation Instructions as listed on AML No. ST00682WI-D, Revision -, or later FAA approved revisions. · Rockwell Collins Inc
- [STC ST01486SE-D](https://openairdocs.org/stc/ST01486SE-D.md): Group aircraft approval for Reduced Vertical Separation Minimum (RVSM). · AeroMech Incorporated
- [STC ST349CH-D](https://openairdocs.org/stc/ST349CH-D.md): Installation of APU Access Panels. · Standard Aero
- [STC ST01623SE](https://openairdocs.org/stc/ST01623SE.md): Installation of Innovative Solutions and Support (IS&S) Air Data Display Units · AeroMech Incorporated
- [STC ST01003CH-D](https://openairdocs.org/stc/ST01003CH-D.md): Installation of AlliedSignal Aerospace N1 digital electronic engine control (DEEC). · Honeywell International Inc
- [STC ST01514CH-D](https://openairdocs.org/stc/ST01514CH-D.md): Installation of Universal Avionics Systems Corporation Terrain Awareness Warning System (TAWS), Software Control (SCN) 10.X and Universal Multi-Function Display (MFD). · Duncan Aviation Inc
- [STC ST456CH-D](https://openairdocs.org/stc/ST456CH-D.md): Installation of AlliedSignal Aerospace TFE731-3D-1H or TFE731-3DR-1H Turbofan Engine(s). · Honeywell International Inc
- [STC SA180NE](https://openairdocs.org/stc/SA180NE.md): Installation of Teledyne Avionics normalized angle of attack indicating system P/N 112B5700. · Aerosonic Corporation
- [STC SA844EA](https://openairdocs.org/stc/SA844EA.md): Installation of Teledyne Avionics Angle of Attack System SL112B300 · Aerosonic Corporation
- [STC SA866EA](https://openairdocs.org/stc/SA866EA.md): Installation of Grimes three light strobe kit. · Honeywell International Inc.
- [STC ST01142WI-D](https://openairdocs.org/stc/ST01142WI-D.md): Modification of a single or dual Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92 control head to a Flight ID capable Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92E control head. · Rockwell Collins Inc
- [STC SA786EA](https://openairdocs.org/stc/SA786EA.md): Installation of lavatory door and bulkhead at station 392. · Garrett Aviation Services
- [STC ST02171CH](https://openairdocs.org/stc/ST02171CH.md): Installation of dual Innovative Solutions and Support Air Data Display Uits and dual Analog Interface Units. · Envoy Aerospace LLC
- [STC ST01307WI-D](https://openairdocs.org/stc/ST01307WI-D.md): Modification of a Collins TVI-920/TVI-920D Vertical Speed/TCAS Indicator installation · Rockwell Collins Inc
- [STC ST01505SE](https://openairdocs.org/stc/ST01505SE.md): Descriptive data pertaining to this design change are considered inadequate for duplication on other products. This approval is limited to Hawker Siddeley DH.125 Series 400A, Serial Number NA742 only. Non-Group (Individual) aircraft approval for Reduced Vertical Separation Minimum (RVSM). · AeroMech Incorporated
- [STC SA4624SW](https://openairdocs.org/stc/SA4624SW.md): Replace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators. · Howell Instruments Inc
- [STC ST01946NY](https://openairdocs.org/stc/ST01946NY.md): Cockpit voice recorder replacement with Universal CVR 30B or CVR120. · MidCanada Mod Center
- [STC SA674CE](https://openairdocs.org/stc/SA674CE.md): Installation of Solar T-62T-39Y, -39 or -40C APU modifications. · PATS Aircraft LLC
- [STC SA1173EA](https://openairdocs.org/stc/SA1173EA.md): Rework of Solar T-62T-39 APU installed by STC SA674CE when Garrett AiResearch TFE-731-3-1H engines are installed per STC SA3870WE. · PATS Aircraft LLC

Next page: https://openairdocs.org/model/raytheon-dh-125-400a/stcs.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
  SELECT stc_number, min(matched_model) AS matched_model
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
  WHERE aircraft_model_code IN ('7150050')
  GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number
```

This list as a web page: https://openairdocs.org/model/raytheon-dh-125-400a/stcs

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.