ST12365IBAircraft structures
Installation of ERT/CNG/1579 Fuselage Protection for Unpaved Runway for Belly Fuselage Skin Panels.
FAA holder: EIRTECH AVIATION SERVICES LIMITED
Aircraft STC directory
ATR - GIE Avions de Transport Régional ATR42-320 STCs
The Jun 30, 2026 FAA DRS snapshot contains 41 selected supplemental type certificates with status Current whose public applicability data names the ATR - GIE Avions de Transport Régional ATR42-320. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
41
listed Current at snapshot
30
holder directories
9
modification categories
Apr 16, 2026
latest recorded revision
Modification demand surface
Other aircraft modifications15
Avionics8
Cargo and special mission5
Aircraft structures4
Cabin and interiors3
Safety and emergency equipment2
Electrical systems2
Aircraft performance1
Aircraft connectivity1
Recorded holders
Northrop Grumman Systems Corporation3Mid Canada Mod Center2Chippewa Aerospace, Inc.2Aviation Communication and Surveillance Systems (ACSS) LLC2Rockwell Collins Inc2Eirtech Aviation Services Limited1Libellule Monde Inc.1Aero Technik Inc.1365 AEROSPACE DDS LIMITED1STG Aerospace Inc.1M7 Aerospace LLC1Woven Electronics LLC1Aeroconseil1PMV Engineering1Med-Pac Inc.1Delta Engineering Corporation1Northeast Engr & Dev Ltd1Securaplane Technologies1U.S. Technical1LiteAir Aviation Products Inc1
Recently revised ATR42-320 STCs
Showing the 41 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
ST03875NYCabin and interiors
Installation of interior placards, signs and markings.
FAA holder: Libellule Monde Inc.
ST04486NYOther aircraft modifications
Installation of the Dual SFIM F227 APIRS.
FAA holder: Mid Canada Mod Center
ST03042CHAircraft structures
Installation of a Global AirWorks Cockpit Door Surveillance System.
FAA holder: Aero Technik Inc.
ST00192IBAvionics
Installation of Automatic Dependent Surveillance – Broadcast (ADS-B) Out System and Single UNS-1Lw Flight Management System including Localizer Performance with Vertical Guidance (LPV) Monitor.
FAA holder: 365 AEROSPACE DDS LIMITED
ST02529ATSafety and emergency equipment
Installation of photoluminescent floor proximity emergency escape path marking system (FPEEPMS).
FAA holder: STG Aerospace Inc.
ST03912ATOther aircraft modifications
Installation of a T2CAS System into an ATR42/72 Series Aircraft and associated hardware.
FAA holder: Woven Electronics LLC
ST04608NYAvionics
Installation of the Rockwell Collins TDR-94D Transponder Upgrade.
FAA holder: Mid Canada Mod Center
ST04602NYCargo and special mission
Installation of Decompression Panel for Bulk Freighter Conversion.
FAA holder: Aeroconseil
ST01761NYCargo and special mission
Conversion of an ATR-420/300/320 passenger configuration into a full Class E cargo configuration, including a new lining, smoke detection system, large cargo door with an embedded crew door, and provisions for the transportation of bulk weight and standard unit load devices.
FAA holder: PMV Engineering
SA01452CHCargo and special mission
Installation of an air ambulance conversion kit.
FAA holder: Med-Pac Inc.
ST04443ATAvionics
Replacement of the HT1000 MCDU (Multi-Function Control Display Unit) with the HT9100 MCDU.
FAA holder: Chippewa Aerospace Inc
ST02647NYAircraft performance
Update of Delta Engineering Synchro's and Sagem ED36 FDAU with APM (Aircraft Performance Monitor).
FAA holder: Delta Engineering Corporation
ST04437ATOther aircraft modifications
Replacement/Upgrade of HT1000 NPR (Nav Processor Unit) and the HT9100 NPR.
FAA holder: Chippewa Aerospace Inc
ST04288NYOther aircraft modifications
For ATR 42 Model Aircraft and ATR 72 Model Aircraft Installation of gravel protection.
FAA holder: Northeast Engr & Dev Ltd
ST04229NYOther aircraft modifications
Introduction of a 16G New Generation Stretcher XL P/N 1120030-Series.
FAA holder: Bucher Leichtbau AG
ST01872NYElectrical systems
Installation of Hawker 9750W0538 (24V 40Ah) and 9750W0350-5 (24V 18Ah) sealed lead-acid battery.
FAA holder: Securaplane Technologies
ST02655LAOther aircraft modifications
Installation of two True Blue Power model TA102 Charging Ports in the cockpit.
FAA holder: U.S. Technical
ST02528SEAircraft structures
Installation of lightweight window plugs.
FAA holder: LiteAir Aviation Products Inc
ST02509SEAvionics
Installation of dual Garmin GTX3000 transponders with ADS-B Out.
FAA holder: AeroMech Incorporated
ST03776NYOther aircraft modifications
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).
FAA holder: Scandinavian Avionics Design ApS
ST03840NYAircraft connectivity
Installation of the SkyTrac Flight Following/SATCOM System.
FAA holder: SkyTrac Systems Ltd.
ST03707NYOther aircraft modifications
Replacement of fluorescent lighting with LED lighting.
FAA holder: First Air
ST01812WIAvionics
Installation of dual Garmin GTN 725 GPS Navigator System with dual Garmin GA36 WAAS/GPS antennas.
FAA holder: Garmin International Inc
ST04057CEAvionics
Installation of the CMA-6800 AMLCD EFIS Displays.
FAA holder: Canard Aerospace Corporation
ST02530LAOther aircraft modifications
Installation of T2CAS with TCAS version 7.1.
FAA holder: Aircraft Communication & Surveillance Systems
ST03846ATOther aircraft modifications
Installation of the Flight Deck Resources SkyTab 3201 Electronic Flight Bag (EFB) System into an Aerospatiale ATR42/72 Series Aircraft and associated hardware.
FAA holder: B/E Aerospace Inc
ST02886NYElectrical systems
Installation of replacement Teledyne Battery Products.
FAA holder: Teledyne Battery Products
ST02524LAOther aircraft modifications
Installation of TCAS version 7.0.
FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC
ST01646LAOther aircraft modifications
Installation of ACSS T2CAS.
FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC
ST03262NYSafety and emergency equipment
Installation of Quality Aircraft Interiors Oxygen Cylinder Restraint System (OCRS), P/N OCRS-1730-QAI, Models A & D.
FAA holder: Quality Aircraft Interiors
ST01635WI-DOther aircraft modifications
Modification of Rockwell Collins, Inc. VHF-4000 and VHF-4000E installations.
FAA holder: Rockwell Collins Inc
ST03042NYAircraft structures
Installation of Fuselage Side Fairings.
FAA holder: Northrop Grumman Systems Corporation
ST03037NYCabin and interiors
One Time Supplemental Type Certificate approval for the installation of a Cabin Power System.
FAA holder: Northrop Grumman Systems Corporation
ST03036NYCabin and interiors
One Time Supplemental Type Certificate approval for the installation of Cabin Interior Modification.
FAA holder: Northrop Grumman Systems Corporation
ST116-008NMOther aircraft modifications
Installation of Honeywell Mk VIII EGPWS system.
FAA holder: ATS International
ST116-004NMCargo and special mission
Modification from a passenger to an all-cargo Class E Configuration.
FAA holder: ATS International
ST00222ATOther aircraft modifications
Installation of SP444, TCA1742, TSP442, 1656, and 4078 batteries.
FAA holder: Aviall Services, Inc.