# STCs that may be installed: N150EX A list on [N150EX](https://openairdocs.org/aircraft/N150EX.md). Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do. In force first, then newest. Page 1 of 3 · 121 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 SA2622NM](https://openairdocs.org/stc/SA2622NM.md): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101) · Precise Flight Inc. - [STC ST08995AC](https://openairdocs.org/stc/ST08995AC.md): Replacement of original O rings and backup rings from landing gear lower bearing and floating piston with Green Tweed, Inc. AGT seals. · Metrea Special Aerospace ISR Inc. - [STC ST03424CH](https://openairdocs.org/stc/ST03424CH.md): Certification of Automatic Dependent Surveillance - Broadcast (ADS-B) Out System with Rockwell Collins TDR-94/-94D Transponders · CMD Flight Solutions LLC - [STC ST02004WI](https://openairdocs.org/stc/ST02004WI.md): Installation of the Garmin GI-275 Instantaneous Vertical Speed Indicators (IVSI) · Peregrine - [STC ST01930LA](https://openairdocs.org/stc/ST01930LA.md): Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI) · Sandel Avionics LLC - [STC ST02635LA](https://openairdocs.org/stc/ST02635LA.md): Modification to replace the existing Mode S Transponder system with the ACSS NXT-600 Mode S Transponder with ADS-B Out · Aviation Communication and Surveillance Systems (ACSS) LLC - [STC SA01452CH](https://openairdocs.org/stc/SA01452CH.md): Installation of an air ambulance conversion kit. · Med-Pac Inc. - [STC SA5556SW](https://openairdocs.org/stc/SA5556SW.md): Installation of an electric driven vapor cycle air conditioning system. · Air Comm Corporation - [STC ST00835DE](https://openairdocs.org/stc/ST00835DE.md): Installation of Automatic Dependent Surveillance - Broadcast (ADS-B) Out and In functionality using the Garmin GTX 335R and GTX 345R Transponders plus qualified position sensor · Peregrine - [STC ST09772AC](https://openairdocs.org/stc/ST09772AC.md): Replacement of certain pneumatic deicer boots · SMR Technologies Inc - [STC ST02429CH](https://openairdocs.org/stc/ST02429CH.md): Install air ambulance conversion. · Spectrum Aeromed LLC dba Spectrum Aeromed - [STC ST00790DE](https://openairdocs.org/stc/ST00790DE.md): Installation of BendixKing CAS 67B Traffic Alert and Collision Avoidance System (TCAS) II Version 7.1 · Peregrine - [STC ST02636LA](https://openairdocs.org/stc/ST02636LA.md): Modification to upgrade the existing XS-950 Mode S Transponder system to add ADS-B Out · Aviation Communication and Surveillance Systems (ACSS) LLC - [STC ST00347BO](https://openairdocs.org/stc/ST00347BO.md): Modification to upgrade a BendixKing CAS 67A TCAS II system to CAS 67B TCAS II Change 7.1 · Pro Star Aviation, LLC - [STC ST00373BO](https://openairdocs.org/stc/ST00373BO.md): Installation of Rockwell Collins TDR-94D Transponders with ADS-B Out · Pro Star Aviation, LLC - [STC ST00193BO](https://openairdocs.org/stc/ST00193BO.md): Installation of Honeywell MK-VIII Enhanced Ground Proximity Warning System. · Pro Star Aviation, LLC - [STC ST00318NY-D](https://openairdocs.org/stc/ST00318NY-D.md): Installation of a Single Loral F-800 digital flight data recorder (DFDR). · Delta Engineering Corporation - [STC ST00304WI](https://openairdocs.org/stc/ST00304WI.md): Installation of Keddeg Company 21BC113 coaleser assembly. · Purolator Facet, 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 SA1178GL](https://openairdocs.org/stc/SA1178GL.md): Install Egan Aviation air ambulance stretcher P/N 125, using Installation Kit P/N 805. · Paul/ Lanna Egan LLC - [STC ST00881WI-D](https://openairdocs.org/stc/ST00881WI-D.md): Modification of a TCAS II system installation to Change 7.0 or Change 7.1 · Rockwell Collins Inc - [STC ST04004AT](https://openairdocs.org/stc/ST04004AT.md): Installation of Dual Garmin GTN 650/750 Global Navigation System with WAAS, Garmin GTX 32 and 33 Mode S Transponders and Garmin GMA 35 Audio Panel · Gardner Aviation Services - [STC ST01855CH-D](https://openairdocs.org/stc/ST01855CH-D.md): Installation of Honeywell N1 Digital Electronic Engine Controls (DEEC) · Honeywell International Inc - [STC ST01202WI-D](https://openairdocs.org/stc/ST01202WI-D.md): Modification of an existing FAA approved Collins TPR-720, TPR-900 or TPR-901 Mode S transponder installation in Part 25 Aircraft using Collins Drawing Index as listed on AML No. ST01202WI-D, latest FAA approved revision. · Rockwell Collins 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 ST00558WI-D](https://openairdocs.org/stc/ST00558WI-D.md): Installation of a Universal Avionics Corporation dual UNS-1B Flight Management System · Duncan Aviation Inc - [STC ST01098WI-D](https://openairdocs.org/stc/ST01098WI-D.md): Installation of Universal Avionics Corporation Terrain Awareness System (TAWS). · Duncan Aviation Inc - [STC ST00996CH](https://openairdocs.org/stc/ST00996CH.md): Installation of AlliedSignal CAS-66A traffic alert and collision avoidance system (TCAS I). · Standard Aero - [STC ST00514WI-D](https://openairdocs.org/stc/ST00514WI-D.md): Installation of an AlliedSignal Avionics, Inc., GNS-XIs Flight Management System (Dual). · Duncan Aviation Inc - [STC ST00697WI-D](https://openairdocs.org/stc/ST00697WI-D.md): Installation of AlliedSignal EGPWS System in the Israel Aircraft Industries Ltd. Models 1124 and 1124A Airplanes. · Duncan Aviation Inc - [STC ST01099WI-D](https://openairdocs.org/stc/ST01099WI-D.md): Installation of Collins AHS-3000A Attitude Heading System. · Duncan Aviation Inc - [STC ST01516CH-D](https://openairdocs.org/stc/ST01516CH-D.md): Installation of Innovative Solutions & Support (IS&S) Dual Air Data Display Units (ADDU) and IS&S Analog Interface Unit (AIU). · Duncan Aviation Inc - [STC ST737CH-D](https://openairdocs.org/stc/ST737CH-D.md): Installation of Universal Navigation Corporation UNS-1K flight management system, using software (SCN) 602.x. · Duncan Aviation Inc - [STC ST599CH-D](https://openairdocs.org/stc/ST599CH-D.md): Installation of a Universal Navigation Corp UNS-1M flight management system with software level (SCN) 23.x for enroute and terminal operations, GPS non-precision approaches and GPS Primary use oceanic/remote operation. · Duncan Aviation Inc - [STC ST458CH-D](https://openairdocs.org/stc/ST458CH-D.md): Installation of an AlliedSignal Aeropsace TFE731-3D-1G Turbofan Engine(s). · 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 ST00844WI-D](https://openairdocs.org/stc/ST00844WI-D.md): Modification of Collins TCAS II or TCAS-94 (TCAS II) system installation with Collins TTR-920 Change 7.0 Receiver Transmitter to a Collins TCAS II or TCAS-94 OTCAS II) system installation with Collins TTR-921 or Collins TTR-4000 Change 7.0 TCAS Receiver Transmitter. · Rockwell Collins Inc - [STC ST01221SE](https://openairdocs.org/stc/ST01221SE.md): Group aircraft approval for Reduced Vertical Separation Minimum (RVSM) · AeroMech Incorporated - [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 ST02150CH-D](https://openairdocs.org/stc/ST02150CH-D.md): Installation of a Honeywell CAS-67A Traffic and Collision Avoidance System (TCAS II), in accordance with ElectroSonics Drawing ES1124-200352-01, Rev. A., dated April 07, 2005 or later FAA approved revision. · Garrett Aviation Services - [STC ST01571LA](https://openairdocs.org/stc/ST01571LA.md): Installation of an Innovative Solutions and Support Dual Air Data System in accordance with Avionics Certification Services (ACS) Master Drawing List No. ST10232LA-T-1, Revision F, dated December 4, 2003, or later FAA-approved revision. · Plain Avionics LLC - [STC ST01150WI](https://openairdocs.org/stc/ST01150WI.md): Vertical Separation Minimum (RVSM) group airworthiness approval of Israel Aircraft Industries (IAI) 1124 Westwind Aircraft · Kohlman Systems Research Inc. - [STC SA00518DE](https://openairdocs.org/stc/SA00518DE.md): Reconfigure aircraft to a maximum seating of 9 passengers. Limited to installation on model 1124 Westwind, serial number 194 ONLY. · Milam International Inc - [STC ST01116SE](https://openairdocs.org/stc/ST01116SE.md): Group aircraft approval for Reduced Vertical Separation Minimum (RVSM) in accordance with AeroMech Document No. AMI-QD-WW-0115, Revision A, dated March 28, 2003, or later FAA-approved revisions. · AeroMech Incorporated - [STC SA5136NM](https://openairdocs.org/stc/SA5136NM.md): Installation of westwind monorail sunvisor system. · Rosen Sunvisor Systems LLC - [STC SA1192SO](https://openairdocs.org/stc/SA1192SO.md): Install Utah Research & Development Co. Model 126BC-101 battery charger system. · Aviall Services, Inc. Next page: https://openairdocs.org/aircraft/N150EX/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 m.matched_by, s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model FROM ( SELECT stc_number, min(side) AS side, arg_min(matched_by, side) AS matched_by, arg_min(matched_model, side) AS matched_model FROM (SELECT stc_number, 1 AS side, 'airframe' AS matched_by, matched_model FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet' WHERE aircraft_model_code = '4500102' UNION ALL SELECT stc_number, 2, 'engine', matched_model FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet' WHERE engine_model_code = '29001') GROUP BY stc_number ) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number) ORDER BY m.side, s.status = 'Current' DESC, s.status_date DESC, s.stc_number ``` This list as a web page: https://openairdocs.org/aircraft/N150EX/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.