SA2040NMOther aircraft modifications
Installation of closet and windscreen.
FAA holder: Safran Cabin Inc.
Aircraft STC directory
McDonnell Douglas DC-9-12 STCs
The Jun 30, 2026 FAA DRS snapshot contains 49 selected supplemental type certificates with status Current whose public applicability data names the McDonnell Douglas DC-9-12. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
49
listed Current at snapshot
21
holder directories
9
modification categories
Jul 18, 2025
latest recorded revision
Modification demand surface
Other aircraft modifications19
Avionics13
Aircraft structures5
Safety and emergency equipment5
Cabin and interiors2
Engine and powerplant2
Aircraft performance1
Aircraft connectivity1
Landing gear and brakes1
Recorded holders
Airborne Maintenance & Engineering Services (AMES)7Amphenol Cable and Interconnect Technologies Inc.6ABX Air Incorporated5Honeywell International Inc3Avionics Group Inc.3Safran Cabin Inc.2B/E Aerospace2ACSS (Aviation Communication and Surveillance Syst2Rockwell Collins Inc2Acron Aviation Inc.1Purolator Facet, Inc1Teledyne Controls1Canard Aerospace Corporation1Northwest Airlines Inc1U.S. Technical Consultants Inc.1Lufthansa Technik AG1Midwest Express Airlines1ASTECH Engineered Products Inc.1Repairtech Intl1Goodrich Corporation1
Recently revised DC-9-12 STCs
Showing the 49 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
ST01518NYCabin and interiors
Installation of Flight Systems Cabin Surveillance System (CSS).
FAA holder: Acron Aviation Inc.
ST00984CHOther aircraft modifications
Installation of Rockwell Collins FPI-955 Electronic Horizontal Situation Indicators (EHSI).
FAA holder: Amphenol Cable and Interconnect Technologies Inc.
ST01017CHOther aircraft modifications
Installation of an AlliedSignal CAS-81 TCAS II System with dual AlliedSignal Mode S Transponders.
FAA holder: Amphenol Cable and Interconnect Technologies Inc.
ST01019CHAvionics
Installation of a Rockwell Collins GNLS-910 GPS Flight Management System.
FAA holder: Amphenol Cable and Interconnect Technologies Inc.
ST01167CHSafety and emergency equipment
Installation of an AlliedSignal MK-VII Enhanced Ground Proximity Warning System.
FAA holder: Amphenol Cable and Interconnect Technologies, Inc.
ST01404CHAvionics
Installation of Universal Avionics System Corporation Multi-Function Display.
FAA holder: Amphenol Cable and Interconnect Technologies, Inc.
ST01818CHSafety and emergency equipment
Installation of a Honeywell Enhanced Ground Proximity Warning System.
FAA holder: Amphenol Cable and Interconnect Technologies, Inc.
SA4817NMOther aircraft modifications
Installation of standard windshear systems.
FAA holder: Honeywell International Inc
SA8047NMOther aircraft modifications
Installation of Honeywell Digital air data computer (DADC).
FAA holder: Honeywell International Inc
SA2991SOOther aircraft modifications
Installation of a replacement coalescer filter, P/N 21D10 or 21D10-1, or 21BC125..
FAA holder: Purolator Facet, Inc
ST00974CHAvionics
Installation of provisions for an Automatic Dependent Surveillance Broadcast (ADS-B) System to provide Cockpit Display of Traffic Information (CDTI).
FAA holder: ABX Air Incorporated
SA1659GLOther aircraft modifications
Installation of Kollsman P/N A4289-10-215 Captain's altimeter, P/N 518-28007-201 first officer's altimeter, P/N 540-23989-001 altitude alerter.
FAA holder: ABX Air Incorporated
SA1660GLAircraft performance
Installation of dual Kollsman575-35900-A1778 mach/airspeed indicator.
FAA holder: ABX Air Incorporated
SA1669GLOther aircraft modifications
Installation of Jet standby horizon P/N 501-1568-14.
FAA holder: ABX Air Incorporated
ST01777CHOther aircraft modifications
Installation of an Innovative Solutions & Support Duplex Altimetry System.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
ST02243LAOther aircraft modifications
Installation of Teledyne Controls Wireless Ground Link - Quick Access REcorder (WQAR).
FAA holder: Teledyne Controls
ST01653CHAircraft structures
Installation of an Auxiliary Power Unit Door Actuator System.
FAA holder: Woodward MPC
ST01779CHAvionics
Installation of a Universal Avionics Terrain Awareness Warning System (TAWS) and a Universal Avionics GPS-1000 Global Positioning System.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
ST02009CHAvionics
Installation of MD-640 multi-function display.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
ST02025CHAvionics
Installation of Honeywell Multi-Function Radar Display (MFRD).
FAA holder: Airborne Maintenance & Engineering Services (AMES)
ST02026CHAvionics
Installation of Honeywell Primus 880 Digital Weather Radar System.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
ST02027CHAvionics
Installation of a second Rockwell Collins Mode-S transponder.
FAA holder: Airborne Maintenance & Engineering Services (AMES)
ST02028CHSafety and emergency equipment
Installation of Honeywell Enhanced Ground Proximity Warning System (EGPWS).
FAA holder: Airborne Maintenance & Engineering Services (AMES)
SA1044GLAircraft structures
Installation of Grimes floor proximity lighting system.
FAA holder: Honeywell International Inc.
ST01066CHOther aircraft modifications
Installation of a Digital Flight Data Recorder and new parameter sensors.
FAA holder: Canard Aerospace Corporation
ST01967CHOther aircraft modifications
Modification of DC-9 Tail Cone Slide Cover.
FAA holder: Northwest Airlines Inc
SA1467GLAircraft connectivity
Installation of an Air to Ground Public Telephone Communication System (Seatfone) or the Genstar Public Telephone System.
FAA holder: U.S. Technical Consultants Inc.
ST02274NYAircraft structures
Installation of Self Illuminating Floor Path Marking System.
FAA holder: Lufthansa Technik AG
ST02062CHLanding gear and brakes
Install Aircraft Braking Systems Corporation (ABSC) Nose Landing Gear Wheel Assembly 9550267-6A or 9550267-7A.
FAA holder: Aircraft Braking Systems Corporation
ST02998ATAvionics
Installation of a Sandel Avionics ST3400 Class A Terrain Awareness and Warning System.
FAA holder: Avionics Group Inc.
ST00231LA-DOther aircraft modifications
Installation of PTC Model 950 first class seats modified for aft facing and provisions only modification for GTE phone system.Note: Responsible ACO is Los Angeles ACO, NM-L.
FAA holder: Midwest Express Airlines
ST01867CHEngine and powerplant
Installation of Vickers engine driven hydraulic pumps.
FAA holder: Eaton Aerospace LLC
SA8028NMOther aircraft modifications
Installation of replacement trash containers.
FAA holder: HST Inc.
ST735SOSafety and emergency equipment
Installation of protective rigid cover over the tail cone emergency evacuation slide.
FAA holder: Derlan Inc
ST00712LAOther aircraft modifications
Modification to provide a replacement Fairing Assembly for McDonnell Douglas P/N 5959171.
FAA holder: ASTECH Engineered Products Inc.
SA2503WEEngine and powerplant
Installation of replacement cooling turbine nozzle assembly.
FAA holder: Repairtech Intl
SA2478SOOther aircraft modifications
Installation of forward coat closet and outside attached folding table.
FAA holder: B/E Aerospace
SA4853NMOther aircraft modifications
Installation of Honeywell Traffic Alert and Collision Avoidance System (TCAS II).
FAA holder: ACSS (Aviation Communication and Surveillance Syst
SA4878NMAvionics
Installation of Honeywell vertical speed indicator/traffic resolution advisory (VSI/TRA) display.
FAA holder: ACSS (Aviation Communication and Surveillance Syst
SA2823CEOther aircraft modifications
Installation of Collins Traffic Alert and Collision avoidance systemTTR-920 (TCAS II).
FAA holder: Rockwell Collins Inc
SA614GLSafety and emergency equipment
Installation of B.F. Goodrich TSO-C69 emergency evacuation slide P/N 7A1276 Series.
FAA holder: Goodrich Corporation
ST02269ATOther aircraft modifications
To upgrade the number of required parameters to be recorded by existing (Sundstrand/AlliedSignal 980-4100-( ) and 980-4120-( ) or Fairchild/Loral 17M703-274 and 17M903-274) flight data recorder.
FAA holder: Avionics Group Inc.
ST09831SCAircraft structures
Installation of Wing Anti-Ice Thermostat/Anticipator.
FAA holder: Honeywell International
ST389CHAvionics
Installation of a Bendix/King CAS 81 TCAS II and Mode S transponder.
FAA holder: Avionics Group Inc.