SA01844WIFlight controls
Installation of Garmin GFC 600 Automatic Flight Control System.
FAA holder: Garmin International Inc.
Aircraft STC directory
Textron Aviation 525 STCs
The Jun 30, 2026 FAA DRS snapshot contains 48 selected supplemental type certificates with status Current whose public applicability data names the Textron Aviation 525. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
48
listed Current at snapshot
27
holder directories
8
modification categories
May 14, 2026
latest recorded revision
Modification demand surface
Other aircraft modifications18
Avionics17
Electrical systems4
Aircraft connectivity3
Landing gear and brakes2
Cabin and interiors2
Flight controls1
Cargo and special mission1
Recorded holders
Avionik Straubing Entwicklungs GmbH5BHE & Associates LTD4Rockwell Collins Inc4CESSNA Duesseldorf Citation Service3Skyway Group Inc2Textron Aviation Inc2JETTECH LLC2Aviation Communication and Surveillance Systems (ACSS) LLC2Garmin International Inc13S Certification LLC1Apcela IFC JV, LLC dba Apcela ATG1Liberty Partners Inc1Sterling Helicopter1Aircraft Systems and Manufacturing Inc1Q.C.M. DESIGN GmbH1Elliott Aviation Technical Products Development, Inc.1Avmax Aviation Services Inc1Heads Up Technologies Inc.1Aero-Mach Wilco LLC1ELDEC Corporation1
Recently revised 525 STCs
Showing the 48 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SA04750NYOther aircraft modifications
Installation of the Electric Flushing Toilet and External Service Panel.
FAA holder: Skyway Group Inc.
SA12345IBOther aircraft modifications
Replacement of the Halon Type 1211 portable fire extinguisher with the Halotron BrX portable fire extinguisher.
FAA holder: Cessna Duesseldorf Citation Service Center GmbH
SA02017WIOther aircraft modifications
The Installation of the Parker-Meggitt iPRESS™ System.
FAA holder: 3S Certification LLC
SA12014LALanding gear and brakes
Installation of aluminum and fiberglass wheel covers.
FAA holder: Premiere-Aviation Inc.
SA11301DSOther aircraft modifications
Installation of an AirSync flight data monitoring system.
FAA holder: BHE & Associates Ltd.
SA04619CHOther aircraft modifications
INSTALL SMARTSKY LITE SYSTEM.
FAA holder: Apcela IFC JV, LLC dba Apcela ATG
SA11222DSAvionics
Installation of automatic dependent surveillance- broadcast( ADS-B) Out.
FAA holder: BHE & Associates Ltd.
SA11158SCOther aircraft modifications
Demonstration of aircraft tolerance to potential electromagnetic interference from certain Transmitting Potable Electronic Devices (T-PEDS).
FAA holder: Liberty Partners Inc.
SA11300DSAvionics
Upgrade previously installed Collins Aerospace Radar Altimeter.
FAA holder: BHE & Associates Ltd.
SA12030NYOther aircraft modifications
Installation of the position/anti-collision LED lights and LED beacon light.
FAA holder: Sterling Helicopter
SA09887ACOther aircraft modifications
Installation of an Avionica MK-III mini Quick Access Recorder (QAR) and optional 4G or LTE Avionica\nCellular Module (avCM.
FAA holder: Aircraft Systems and Manufacturing Inc.
SA11874LAAircraft connectivity
Installation of Collins Iridium Certus Satcom.
FAA holder: Q.C.M. Design GmbH
SA01848WIAvionics
Modification of a Rockwell Collins Global Positioning System (GPS).
FAA holder: Rockwell Collins Inc.
SA00209IBOther aircraft modifications
Installation of Single Garmin GTN 725(Xi)/GTN 750 (Xi) Unit and optional Garmin Flight Stream FS 510.
FAA holder: AVIONIK STRAUBING ENTWICKLUNGS GmbH
SA03316CHAircraft connectivity
Activation of an 802.11 a/b/g/n WiFi System.
FAA holder: Elliott Aviation Technical Products Development Inc.
SA11219SCAvionics
Installation of a Rockwell Collins Pro Line Fusion ® embedded display system (EDS) with updated flight recorder data outputs for interface with the Digital Flight Data Recorder (DFDR).
FAA holder: BHE & Associates LTD
SA00120IBElectrical systems
Installation of the Universal Kapture Cockpit Voice Recorder (CVR) with Recorder Independent Power Supply (RIPS).
FAA holder: Avmax Aviation Services Inc.
SA10245SCAircraft connectivity
Installation of Heads Up Technologies, Inc. XM 400 Radio Receiver and Antenna System.
FAA holder: Heads Up Technologies Inc.
SA00093IBAvionics
Installation of the provisions for wireless connection of a PED/EFB to Garmin G3000 avionics via Garmin FS-510.
FAA holder: CESSNA DUESSELDORF CITATION
ST00011WIElectrical systems
Installation of Concorde RG380E/40 and 40B battery.
FAA holder: Aero-Mach Wilco LLC
SA01085DEOther aircraft modifications
Master Drawing List, Doc No. MDL-TXT-001, LinxUs Legacy, Issue IR.1,.
FAA holder: Textron Aviation Inc
SA00024IBAvionics
Installation of S/W 6.71 updated Garmin GTN6/750 or alternatively GTN6/750Xi navigation instruments, with Garmin Flight Stream 510 Bluetooth in accordance with Avionik Straubing.
FAA holder: Avionik Straubing Entwicklungs GmbH
SA02272SELanding gear and brakes
Installation of a Crane Aerospace & Electronics Tire Sensor Assembly.
FAA holder: ELDEC Corporation
SA01958WIAvionics
Installation of Garmin Avionics Modernization Package.
FAA holder: Blackhawk Aerospace Technologies Inc.
SA01960WIOther aircraft modifications
Installation of a RVSM-capable Garmin GDU-1060 Touch Screen PFD.
FAA holder: JETTECH LLC
SA02075SEElectrical systems
Installation of a Mid-Continent MD835( ) Lithium Ion Battery.
FAA holder: Mid-Continent Instrument Co. Inc.
SA04525NYAvionics
Installation of dual GPS/NAV/COMM Garmin GNS430/530(A)W.
FAA holder: Avionik Straubing GmbH
SA04520NYAvionics
ADS-B Out GNSS source modification for transponder #2.
FAA holder: CESSNA Duesseldorf Citation Service
SA02677LAAvionics
Modification to upgrade the existing Mode S Transponder system by installing the ACSS NXT-700 Transponder with ADS-B Out and optionally install the ACSS NXG-900 GPS as the position source for ADS-B Out.
FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC
SA02678LAAvionics
Modification to upgrade the existing Mode S Transponder system by installing the ACSS NXT-600 Transponder with ADS-B Out and optionally install the ACSS NXG-900 GPS as the position source for ADS-B Out.
FAA holder: Aviation Communication and Surveillance Systems (ACSS) LLC
SA03842NYOther aircraft modifications
Installation of the Tamarack ATLAS Winglets.
FAA holder: Tamarack Aerospace Group Inc.
SA01093SECargo and special mission
Installation and inspection of emergency medical stretcher and base, and oxygen system.
FAA holder: LifePort LLC
SA04066NYOther aircraft modifications
Installation of Dual Garmin GTN650/GTN750 Systems.
FAA holder: Avionik Straubing Entwicklungs GmbH
SA01684WIOther aircraft modifications
Installation of Rockwell Collins, Inc. Aircraft Information Management (AIM) System.
FAA holder: Rockwell Collins Inc
SA03934NYOther aircraft modifications
Installation of Garmin GTN 725.
FAA holder: CESSNA Duesseldorf Citation Service
SA09862ACCabin and interiors
Removal of original equipment manufacturer ladder and installation of a new design cabin entrance step assembly.
FAA holder: Sierra Industries Ltd.
SA03911NYOther aircraft modifications
Installation of a LPV Converter.
FAA holder: Avionik Straubing Entwicklungs GmbH
SA00797DEElectrical systems
Installation of Teledyne Battery Products P/N 7638-44T Lead-Acid Battery.
FAA holder: Teledyne Battery Products
SA01806WIOther aircraft modifications
Modification of Rockwell Collins TCAS II System Installation with DC powered TCAS Transmitter Receiver Processor.
FAA holder: Rockwell Collins Inc
SA01594WI-DAvionics
Installation of the Garmin G1000 Integrated Avionics System and GFC 700 Automatic Flight Control System including Group Airworthiness Approval for Reduced Vertical Separation Minimum (RVSM).
FAA holder: Textron Aviation Inc
SA01544WI-DOther aircraft modifications
Modification of a Rockwell Collins Inc AFD-3010 and AFD-3010E Adaptive Flight Installation in Part 23 Aircraft.
FAA holder: Rockwell Collins Inc