ST01823WIAvionics
Installation of Garmin GTS Traffic Sensor with Garmin GTX 3000 Mode S Transponders with ADS-B Out.
FAA holder: Blackhawk Aerospace Technologies Inc.
Aircraft STC directory
Textron Aviation 550 STCs
The Jun 30, 2026 FAA DRS snapshot contains 77 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation 550. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
77
listed Current at snapshot
29
holder directories
10
modification categories
Jun 10, 2026
latest recorded revision
Modification demand surface
Avionics34
Other aircraft modifications22
Electrical systems5
Cabin and interiors4
Landing gear and brakes3
Aircraft connectivity3
Cargo and special mission3
Fuel systems1
Aircraft structures1
Engine and powerplant1
Recorded holders
Sierra Industries Ltd.14Blackhawk Aerospace Technologies Inc.9Chippewa Aerospace, Inc.5Peregrine5Honeywell International Inc5Acron Aviation Inc.2Aerospace Design & Compliance LLC2JETTECH LLC2Kaman Corporation Aircraft Wheel and Brake LLC2Mid Canada Mod Center2Pro Star Aviation, LLC2Sierra Industries Inc2Pentastar Aviation LLC23S Certification LLC1BHE & Associates LTD1Elliott Aviation Technical Products Development, Inc.1L2 Aviation1CMD Flight Solutions LLC1Summit Aviation Inc.1Aero-Mach Wilco LLC1
Recently revised 550 STCs
Showing the 77 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
ST00197IBOther aircraft modifications
Installation of the Universal Quick Access Recorder (uQAR).
FAA holder: Flight Data Technologies Inc.
ST12344IBOther aircraft modifications
Replacement of the Halon Type 1211 portable fire extinguisher with Halotron BrX portable fire extinguisher with Halotron BrX portable fire extinguisher.
FAA holder: Cessna Duesseldorf Citation Service Center GmbH
ST02016WILanding gear and brakes
Installation of the Meggitt Wireless Tire Pressure Sensor.
FAA holder: 3S Certification LLC
ST11216DSAvionics
Installation of automatic dependent surveillance-broadcast (ADS-B) out on Part 25 aircraft.
FAA holder: BHE & Associates Ltd.
ST02718LAAvionics
Modification to replace the existing standby instrument.
FAA holder: Acron Aviation Inc.
ST03292CHAircraft connectivity
Activation of an 802.11 a/b/g/n WiFi System.
FAA holder: Elliott Aviation Technical Products Development, Inc.
ST155CHAvionics
Installation of BF Goodrich Avionics systems TCAS791 traffic alert and collison avoidance system I (TCASI).
FAA holder: Acron Aviation Inc.
ST04742NYAvionics
Installation of SkyVue 1000 Cockpit Upgrade including dual Avidyne IFD540 FMS with LPV i.
FAA holder: Aerospace Design & Compliance LLC
ST04736NYElectrical systems
True Blue TS28 Emergency Battery Power Supply Replacement.
FAA holder: Aerospace Design and Compliance LLC
ST04159CHAvionics
Upgrade of Honeywell Primus II Communications Units RCZ-8XX Transponders to support Certification of Automatic Dependent Surveillance -Broadcast (ADS-B) Out.
FAA holder: CMD Flight Solutions LLC
ST04575ATOther aircraft modifications
Installation of the Rockwell Collins ALT-1000+/ -4000+ with 5G Filtering.
FAA holder: Chippewa Aerospace Inc.
ST02029WIAvionics
Installation of Garmin GI 275 Standby Instrument and GSB 15 USB Port.
FAA holder: Blackhawk Aerospace Technologies
SA1773SOElectrical systems
Installation of a third stand-by attitude gyro and dedicated power supply AIM P/N PE 24-1RM.
FAA holder: Summit Aviation Inc
ST01070DEOther aircraft modifications
Installation of the Curtiss-Wright Fortress Flight Data Recorder (with Cockpit Voice Recorder).
FAA holder: Peregrine
ST01985WIAvionics
Installation of the Garmin GI-275 I Electronic Standby Instrument (ESI).
FAA holder: Peregrine
ST00011WIElectrical systems
Installation of Concorde RG380E/40 and 40B battery.
FAA holder: Aero-Mach Wilco LLC
SA1297GLOther aircraft modifications
Installation of Cleveland main wheels and brakes.
FAA holder: Kaman Corporation Aircraft Wheel and Brake LLC
SA882GLLanding gear and brakes
Install aircraft wheel and brake conversion kit 199-137.
FAA holder: Kaman Corporation Aircraft Wheel and Brake LLC
ST01994WIOther aircraft modifications
Installation of Honeywell Primus Elite Enhanced Functionality Modification and Honeywell Primus Elite Drop-in Modification.
FAA holder: TurboJet Engineering Pty Ltd
ST04281ATAvionics
Installation for the Upgrade of the NZ-2000 FMS computer for software version NZ6.
FAA holder: Chippewa Aerospace Inc
ST04473CHAvionics
Installation of a Honeywell RDR -7000 Weather Radar System.
FAA holder: Honeywell International Inc
ST00617WIAvionics
Installation of Bendix/King EFS-50 Two-Tube (EFIS) Electronic Flight Instrumentation System. For \n 550 (S/N 0002 thru 0733).
FAA holder: Blackhawk Aerospace Technologies Inc.
ST00624WIAvionics
Installation of Bendix/King EFS-50 Five-Tube (EFIS) Electronic Flight Instrumentation System. FOr \n 550 (S/N 0002 thru 0733).
FAA holder: Blackhawk Aerospace Technologies Inc.
ST01149WIOther aircraft modifications
Installation of IS&S Air Data System with Reduced Vertical Separation Minimum (RVSM) compliant Dual Air Data System.
FAA holder: Blackhawk Aerospace Technologies Inc.
ST01162WIOther aircraft modifications
Reduced Vertical Separation Minimum (RVSM) group airworthiness approval of the Cessna Aircraft Model 500, 501, 550 and 551.
FAA holder: Blackhawk Aerospace Technologies Inc.
ST01197WIAvionics
Installation of Universal Avionics EFI-550 2-Display EFIS System. Data required: (1) Columbia Avionics, Inc. Master Document List No. 30141165, Revision 3, dated September 24, 2003; and (2) FAA Approved Flight Manual Supplement 30141180, dated September 30, 2003, or later FAA Approved Revisions to (1) or (2).
FAA holder: Blackhawk Aerospace Technologies Inc.
ST01466WIAvionics
Installation of Universal Avionics EFI-890R Flat Panel EFIS System.
FAA holder: Blackhawk Aerospace Technologies Inc.
ST01691WIAvionics
Installation of Garmin GTN Series GPS/Comm/Nav Systems with optional Garmin GDL-69/A XM Weather Data Link, GTX-33 Series Transponders and optional Bendix/King KMR-675 Marker Beacon Receiver.
FAA holder: Blackhawk Aerospace Technologies Inc.
ST01929WIAvionics
Installation of Garmin G700 TXi EFIS system and GWX 75 Weather Radar.
FAA holder: Blackhawk Aerospace Technologies Inc.
ST04566NYAvionics
Installation of the Garmin 400W, Rockwell Collins TCAS 4000 / Dual TDR-94D Transponder.
FAA holder: Mid Canada Mod Center
ST02642ATOther aircraft modifications
Installation of a RVSM Air Data System.
FAA holder: Carlisle Interconnect Technologies Inc.
SA4510NMAvionics
Installation of Dual Honeywell EDZ-805 Electronic Flight Instrument System, with options.
FAA holder: Honeywell International Inc
SA4562NMOther aircraft modifications
Installation of a Honeywell LSZ-850 Lightning Sensor System.
FAA holder: Honeywell International Inc
SA2242NMAvionics
ONE ONLY STC, SN 550-0098; Installation of dual Sperry EDZ-601, or EDZ-801, Electronic Flight Instrument Systems (EFIS).
FAA holder: Honeywell International Inc
SA8956SWOther aircraft modifications
Installation of Trimble TNL 8100 global positioning system.
FAA holder: Honeywell International Inc
ST01027DEElectrical systems
Installation of MarathonNorco Aerospace Inc Nickel Cadmium battery in place of existing Nickel Cadmium main aircraft battery/batteries.
FAA holder: MarathonNorco Aerospace Inc
ST00158BOAvionics
Installation of Universal Avionics Systems Corporation (UASC) Flight Management System (FMS).
FAA holder: Pro Star Aviation, LLC
ST01897WIAvionics
Installation of the RVSM capable Garmin G700 with GDU-1060 Touch Screen Primary Flight Display (PFD).
FAA holder: JETTECH LLC
ST04309NYAvionics
Installation of Collins Proline 21 Integrated Display.
FAA holder: Mid Canada Mod Center
ST00892DEOther aircraft modifications
Installation of dual BendixKing KT 74 Transponders and optional BendixKing KGX 150 Receiver.
FAA holder: Peregrine
ST00361BOAvionics
Installation of a Honeywell Primus II (XS-852) ADS-B Out System.
FAA holder: Pro Star Aviation, LLC
ST04411ATAvionics
Installation of Upgraded IC-615 with NZ-2000 FMS Software Version 6.1.
FAA holder: Chippewa Aerospace Inc
ST00366WIOther aircraft modifications
Installation of Keddeg Company P/N 21BC115 Coalescer Assembly.
FAA holder: Purolator Facet, Inc
SA1919CEAvionics
Installation of Litton LTN-3000 VLF/OMEGA/RNAV system, dual Sperry RH-445 RMI's interfaced with dual Collins VIR-31A and ADF-60 navigation receivers, Dorne Margolin ELT-6 emergency locator beacon, Motorola NA-135 SELCAL interfaced with Collins HF-220 and dual VHF-20 communications transceivers, Teledyne SLZ9157-1 IVSI's and Fairchild cockpit voice recorder.
FAA holder: Textron Aviation Inc
SA1562NMCargo and special mission
Installation of cargo liner and retention system.
FAA holder: Sierra Industries Ltd.
SA4098NMCabin and interiors
Installation of a replacement cabin door hinge assembly.
FAA holder: Sierra Industries Ltd.
SA5218NMCargo and special mission
Installation of medical air transport unit.
FAA holder: Sierra Industries Ltd.
SA5232NMOther aircraft modifications
Intallation of D.C. converter.
FAA holder: Sierra Industries Ltd.
SA5233NMCargo and special mission
Installation of side-looking camera hatch.
FAA holder: Sierra Industries Ltd.
SA80RMFuel systems
Installation of extended range fuel tank and relocation of aft pressure bulkhead.
FAA holder: Sierra Industries Inc
ST09630ACAvionics
Installation of Meggitt Avionics Engine Instrument Display System.
FAA holder: Sierra Industries Ltd.
ST09718ACAircraft connectivity
Installation of Artex C406 (406 MHz) Series emergency locator transmitter, antenna, and remote switch assembly.
FAA holder: Sierra Industries Ltd.
ST165RMOther aircraft modifications
Installation of fiberglass tail cone in lieu of metal tail cone.
FAA holder: Sierra Industries Ltd.
SA09229SCAircraft structures
Removal of mechanical factory nose baggage door stop assemblies and installation of pneumatic gas cylinder baggage door openers.
FAA holder: Sierra Industries Ltd.
SA8437SWOther aircraft modifications
Installation of nose radome quick release mechanism.
FAA holder: Sierra Industries Ltd.
SA8829SWOther aircraft modifications
Installation of an inertial reel assembly on the pilot and co-pilot shoulder harnesses.
FAA holder: Sierra Industries Ltd.
ST09011SCLanding gear and brakes
Installation of a pilot's, control wheel mounted, alternate gear horn silence switch.
FAA holder: Sierra Industries Ltd.
ST09559ACEngine and powerplant
Installation of Williams/Rolls FJ44-2A engine. Installation of STC SA732NW required for this mod.
FAA holder: Sierra Industries Ltd.
ST09863ACCabin and interiors
Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly.
FAA holder: Sierra Industries Ltd.
ST04194CHAvionics
Install Honeywell Liquid Crystal Display (LCD) Flight Displays.
FAA holder: Pentastar Aviation LLC
ST02632LAAvionics
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.
FAA holder: Aviation Communications and Surveillance Systems
ST03912NYAvionics
Upgrade of the GNS-XLS Single or Dual Fight Management System (FMS) to attain P-RNAV capability at RNP10, RNP4 and RNP1.
FAA holder: CESSNA Duesseldorf Citation Service
ST04367ATOther aircraft modifications
Removal of the Existing Honeywell DL-900 or DL-950 Data Loader and Installation of the Honeywell DL-1000 Data Loader.
FAA holder: Chippewa Aerospace Inc
ST04282ATAvionics
Installation of the Honeywell DU-875 LCD Flight Display.
FAA holder: Chippewa Aerospace Inc
ST00796DEElectrical systems
Installation of Teledyne Battery Products P/N 7638-44T Lead-Acid Battery.
FAA holder: Teledyne Battery Products
ST00800DEOther aircraft modifications
Modification of a TCAS II system installation to Change 7.1.
FAA holder: West Star Aviation Inc
ST03138CHOther aircraft modifications
Installation of Electronic Flight Bag (EFB Class 2) provisions for the use of Tablet PC s.
FAA holder: Pentastar Aviation LLC
ST00063MCAvionics
Installation of Universal Avionics Dual UNS-1Espw upgrade.
FAA holder: Stevens Aviation
SA174RMCabin and interiors
Installation of extended width cabin door.
FAA holder: Sierra Industries Inc
SA125RMOther aircraft modifications
Installation of tail cone ski rack.
FAA holder: Aviation Fabricators Inc