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
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
Replacement of the Halon Type 1211 portable fire extinguisher with the Halotron BrX portable fire extinguisher.
FAA holder: Cessna Duesseldorf Citation Service Center GmbH
The Installation of the Parker-Meggitt iPRESS™ System.
FAA holder: 3S Certification LLC
Installation of aluminum and fiberglass wheel covers.
FAA holder: Premiere-Aviation Inc.
Installation of an AirSync flight data monitoring system.
FAA holder: BHE & Associates Ltd.
INSTALL SMARTSKY LITE SYSTEM.
FAA holder: Apcela IFC JV, LLC dba Apcela ATG
Installation of automatic dependent surveillance- broadcast( ADS-B) Out.
FAA holder: BHE & Associates Ltd.
Upgrade previously installed Collins Aerospace Radar Altimeter.
FAA holder: BHE & Associates Ltd.
Installation of the position/anti-collision LED lights and LED beacon light.
FAA holder: Sterling Helicopter
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.
Installation of Collins Iridium Certus Satcom.
FAA holder: Q.C.M. Design GmbH
Modification of a Rockwell Collins Global Positioning System (GPS).
FAA holder: Rockwell Collins Inc.
Installation of Single Garmin GTN 725(Xi)/GTN 750 (Xi) Unit and optional Garmin Flight Stream FS 510.
FAA holder: AVIONIK STRAUBING ENTWICKLUNGS GmbH
Activation of an 802.11 a/b/g/n WiFi System.
FAA holder: Elliott Aviation Technical Products Development Inc.
Installation of the Universal Kapture Cockpit Voice Recorder (CVR) with Recorder Independent Power Supply (RIPS).
FAA holder: Avmax Aviation Services Inc.
Installation of Heads Up Technologies, Inc. XM 400 Radio Receiver and Antenna System.
FAA holder: Heads Up Technologies Inc.
Installation of the provisions for wireless connection of a PED/EFB to Garmin G3000 avionics via Garmin FS-510.
FAA holder: CESSNA DUESSELDORF CITATION
Installation of Concorde RG380E/40 and 40B battery.
FAA holder: Aero-Mach Wilco LLC
Master Drawing List, Doc No. MDL-TXT-001, LinxUs Legacy, Issue IR.1,.
FAA holder: Textron Aviation Inc
Installation of a Crane Aerospace & Electronics Tire Sensor Assembly.
FAA holder: ELDEC Corporation
Installation of Garmin Avionics Modernization Package.
FAA holder: Blackhawk Aerospace Technologies Inc.
Installation of a Mid-Continent MD835( ) Lithium Ion Battery.
FAA holder: Mid-Continent Instrument Co. Inc.
Installation of dual GPS/NAV/COMM Garmin GNS430/530(A)W.
FAA holder: Avionik Straubing GmbH
ADS-B Out GNSS source modification for transponder #2.
FAA holder: CESSNA Duesseldorf Citation Service
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
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
Installation of the Tamarack ATLAS Winglets.
FAA holder: Tamarack Aerospace Group Inc.
Installation of Dual Garmin GTN650/GTN750 Systems.
FAA holder: Avionik Straubing Entwicklungs GmbH
Installation of Garmin GTN 725.
FAA holder: CESSNA Duesseldorf Citation Service
Installation of a LPV Converter.
FAA holder: Avionik Straubing Entwicklungs GmbH
Installation of Teledyne Battery Products P/N 7638-44T Lead-Acid Battery.
FAA holder: Teledyne Battery Products