# STCs that may be installed: Hawker Siddeley DH.125-1A/522

A list on [Hawker Siddeley DH.125-1A/522](https://openairdocs.org/model/hawker-siddeley-dh-125-1a-522.md).

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

Page 1 of 2 · 92 STCs

- [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 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 ST01930LA](https://openairdocs.org/stc/ST01930LA.md): Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI) · Sandel Avionics LLC · Lists DH.125 Series 1A
- [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 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 SA1002CE](https://openairdocs.org/stc/SA1002CE.md): Relocation of warning cancel switch from instrument panel to #1 engine power lever. · Textron Aviation Inc · Lists DH.125 Series 1A
- [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 ST00415LA](https://openairdocs.org/stc/ST00415LA.md): Installation of Concorde Battery Model RG-390E · Concorde Battery Corporation
- [STC ST01809LA](https://openairdocs.org/stc/ST01809LA.md): Installation of Hawker PN 9750W0640 Sealed Lead Acid Battery. · Securaplane Technologies
- [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 ST01380LA](https://openairdocs.org/stc/ST01380LA.md): Installation of Diamond J, Inc. Engine Indicators N1, N2, and ITT. · Gulfstream-California Inc. · Lists DH.125 Series 1A
- [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 ST349CH-D](https://openairdocs.org/stc/ST349CH-D.md): Installation of APU Access Panels. · Standard Aero · Lists DH.125 Series 1A
- [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 · Lists DH.125 Series 1A
- [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 · Lists DH.125 Series 1A
- [STC SA126NE](https://openairdocs.org/stc/SA126NE.md): Installation of Teledyne Avionics normalized angle of attack indicating system, P/N 112B4700. · Aerosonic Corporation · Lists DH.125 Series 1A
- [STC SA866EA](https://openairdocs.org/stc/SA866EA.md): Installation of Grimes three light strobe kit. · Honeywell International Inc.
- [STC ST01733SE](https://openairdocs.org/stc/ST01733SE.md): ONE-ONLY: Non-Group (Individual) aircraft approval for Reduced Vertical Separation Minimum (RVSM), S/N 25032. · AeroMech Incorporated · Lists DH.125 Series 1A
- [STC ST01728SE](https://openairdocs.org/stc/ST01728SE.md): ONE-ONLY: Non-Group (Individual) aircraft approval for Reduced Vertical Separation Minimum (RVSM), S/N 25101. · AeroMech Incorporated · Lists DH.125 Series 1A
- [STC ST01946NY](https://openairdocs.org/stc/ST01946NY.md): Cockpit voice recorder replacement with Universal CVR 30B or CVR120. · MidCanada Mod Center
- [STC SA1176EA](https://openairdocs.org/stc/SA1176EA.md): Installation of Solar T-62T-40C APU when Garrett AiResearch TFE-731-3-1H engines are installed in accordance with STC SA3925WE. · PATS Aircraft LLC · Lists DH.125 Series 1A
- [STC SA1143EA](https://openairdocs.org/stc/SA1143EA.md): Limited to installation on model DH.125-1A, serial number 25091 ONLY. · PATS Aircraft LLC · Lists DH.125 Series 1A
- [STC SA1175EA](https://openairdocs.org/stc/SA1175EA.md): Installation of access doors. · PATS Aircraft LLC · Lists DH.125 Series 1A
- [STC ST01223WI](https://openairdocs.org/stc/ST01223WI.md): Replacement of the original nickel-cadmium battery with a Concorde Valve Regulated Sealed-Lead-Acid (VRSLA) RG-125 series Battery in the Raytheon Model BH.125, DH.125 and HS.125 Airplanes in accordance with Concorde Battery Corporation Master Drawing List, Drawing No. 5-0207, Revision C, dated October 31, 2003, or later FAA approved revision. · Concorde Battery Corporation
- [STC SA4148NM](https://openairdocs.org/stc/SA4148NM.md): Cockpit sun visor installation. · Rosen Sunvisor Systems LLC · Lists DH.125 Series 1A
- [STC SA1185SO](https://openairdocs.org/stc/SA1185SO.md): Replace existing batteries with 2371, 2376 or 23491 nickel-cadmium batteries. · Aviall Services, Inc.
- [STC ST1003SO](https://openairdocs.org/stc/ST1003SO.md): Replace existing lead-acid batteries with Gill BB638/T1-E lead acid batteries, part numbers BSI 200 left and BSI 200 right · Aviall Services, Inc.
- [STC SA4147SW](https://openairdocs.org/stc/SA4147SW.md): Installation of one, two and three and four-place side facing seat · Aviation Fabricators Inc
- [STC ST01324LA](https://openairdocs.org/stc/ST01324LA.md): Installation of Garrett Aviation auxiliary electrical hydraulic system. · AiResearch Aivation Service Co
- [STC ST01231CH-D](https://openairdocs.org/stc/ST01231CH-D.md): Installation of a Collins FCS-80 flight director system installed as a second system for use by copilot. · ElectroSonics
- [STC SA756GL](https://openairdocs.org/stc/SA756GL.md): Modify radome, P/N 25RF9333A. · Saint-Gobain Performance Plastics Corp · Lists DH.125 Series 1A
- [STC SA662NE](https://openairdocs.org/stc/SA662NE.md): Installation of a passenger Interior and Avionics · Bombardier Completion Center Inc
- [STC ST01053CH-D](https://openairdocs.org/stc/ST01053CH-D.md): Installation of an ARTEX 110-406 NAV Emergency Locator Transmitter. · Garrett Aviation Services
- [STC ST01136CH-D](https://openairdocs.org/stc/ST01136CH-D.md): Installation of a Senior Flexonics Inc. Signal conditioner Unit. · Garrett Aviation Services · Lists DH.125 Series 1A
- [STC SA1147SW](https://openairdocs.org/stc/SA1147SW.md): Installation of main landing gear doors. · Sierra Industries, Inc · Lists DH.125 Series 1A
- [STC SA858WE](https://openairdocs.org/stc/SA858WE.md): Environmental control system. · GE Engine Services-Corporate Aviation Inc. DBA Garrett Aviation Services · Lists 125 Series
- [STC SA859WE](https://openairdocs.org/stc/SA859WE.md): Installation of air conditioning primary feed duct. · GE Engine Services-Corporate Aviation Inc. DBA Garrett Aviation Services · Lists DH.125 Series
- [STC SA860WE](https://openairdocs.org/stc/SA860WE.md): Installation of pressurization control system. · GE Engine Services-Corporate Aviation Inc. DBA Garrett Aviation Services · Lists 125 Series
- [STC ST348CH-D](https://openairdocs.org/stc/ST348CH-D.md): Installation of a Sundstrand Mark VI Ground Proximity Warning System. · Garrett Aviation Services
- [STC SA1184SO](https://openairdocs.org/stc/SA1184SO.md): Replace existing batteries with the SAFT 2371-5 series nickel- cadmium batteries. · SAFT America Inc · Lists DH.125 Series
- [STC SE09516SC](https://openairdocs.org/stc/SE09516SC.md): Modification of nacelle inlet bulkhead. (Equipped with TFE731 engines) · Jet Services Enterprises, Inc · Lists DH.125 Series
- [STC ST569CH-D](https://openairdocs.org/stc/ST569CH-D.md): Installation of a Dual Universal Avionics UNS-1D, Flight Management System with GPS as a primary means of navigation. · Garrett Aviation Services · Lists DH.125 Series 1A
- [STC SA2927WE](https://openairdocs.org/stc/SA2927WE.md): Installation of logo light on lower surface of horizontal stabilizer. · DeVore Aviation Corporation of America, a New Mexico Corporation
- [STC SA857WE](https://openairdocs.org/stc/SA857WE.md): Installation of Garrett GTCP30-92 or GTCP30-92C auxiliary power unit. · UNC/CFC Acquisition Co · Lists DH.125 Series 1A
- [STC SA1142WE](https://openairdocs.org/stc/SA1142WE.md): Installation of jump seat. · CFC Aviation Services LP · Lists DH.125 Series 1A
- [STC SA1358WE](https://openairdocs.org/stc/SA1358WE.md): Installation of a combined airspeed and machmeter indicator. · CFC Aviation Services LP · Lists DH.125 Series 1A

Next page: https://openairdocs.org/model/hawker-siddeley-dh-125-1a-522/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 ('4230110')
  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/hawker-siddeley-dh-125-1a-522/stcs

---
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