# N109SF: 1989 Agusta A109A II - Status: Valid registration - Airframe: [Agusta A109A II](https://openairdocs.org/model/agusta-a109a-ii) (registry code 0260120, 8 seats) - Engine: [Allison 250 SER 317HP](https://openairdocs.org/engine/allison-250-ser-317hp) (registry code 03011) - Data sheets: [TCDS H7EU](https://openairdocs.org/tcds/H7EU) (Leonardo S.p.A.) (OpenAirDocs) - Serial number: 7436 - Year built: 1989 - Type: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Standard, normal - Airworthiness date: January 31, 2001 - Certificate issued: November 4, 2016 - Expires: November 30, 2029 - Mode S code: A027B9 - Registered owner: [Heli Assets LLC](https://openairdocs.org/faa-owner/HELI%20ASSETS%20LLC) - Location: [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa) - Owner type: LLC - Owner's area on the map: 33.4223° N, 111.8226° W: Placed by OpenAirDocs: center of Mesa, AZ, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=109SF - Page: https://openairdocs.org/aircraft/N109SF From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 41 in force ### Matched by airframe (Agusta A109A II) - [AD 2026-17-07](https://openairdocs.org/ad/2026-17-07): Main rotor mast/swashplate · Leonardo A109A, A109A II, A109C and 6 more. Effective Oct 2, 2026 - [AD 2025-17-10](https://openairdocs.org/ad/2025-17-10): Main Rotor Control · Leonardo A109A, A109A II, A109C and 3 more. Effective Sep 9, 2025 - [AD 2025-07-01](https://openairdocs.org/ad/2025-07-01): Air Data Computer · Synthetic Vision Electronic Flight Information System (Arrow STC SR09595RC or ST01523WI). Effective May 15, 2025 - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 2023-01-02](https://openairdocs.org/ad/2023-01-02): Emergency Equipment · Apical Industries, Inc. Emergency Float Kit (STC SR01812LA). Effective Feb 17, 2023 - [AD 2022-05-10](https://openairdocs.org/ad/2022-05-10): Cabin Equipment/Furnishings · Airbus Helicopters AS332L, AS332L1, AS332L2 and 57 more. Effective Apr 20, 2022 - [AD 2021-26-24](https://openairdocs.org/ad/2021-26-24): Main Rotor Blades · Leonardo A109A and A109A II. Effective Feb 22, 2022 - [AD 2021-21-03](https://openairdocs.org/ad/2021-21-03): Rotorcraft Flight Control, Rotorcraft Servo System · Leonardo A109A, A109A II, A109C and 6 more. Effective Dec 10, 2021 - [AD 2021-17-10](https://openairdocs.org/ad/2021-17-10): Main Rotor Brake · Leonardo A109A, A109A II, A109C and 4 more. Effective Sep 7, 2021 - [AD 2021-10-24](https://openairdocs.org/ad/2021-10-24): Tail Rotor Control System · Leonardo A109A and A109A II. Effective Jun 18, 2021 - [AD 2018-06-51](https://openairdocs.org/ad/2018-06-51): Main Rotor Mast/Swashplate · Agusta A109A, A109A II, A109C and 6 more. Effective Jun 7, 2018 - [AD 2017-18-13](https://openairdocs.org/ad/2017-18-13): Main Rotor Blade · Agusta A109A and A109A II. Effective Sep 25, 2017 - [AD 2016-18-18](https://openairdocs.org/ad/2016-18-18): Tail Rotor Drive Shaft · Agusta A109A, A109A II, A109C and 4 more. Effective Oct 20, 2016 - [AD 2015-05-51](https://openairdocs.org/ad/2015-05-51): Main Rotor Blades · Agusta A109A and A109A II. Effective Jul 1, 2015 - [AD 2015-05-52](https://openairdocs.org/ad/2015-05-52): Tail Rotor Controls · Agusta A109, A109A, A109A II and 7 more. Effective Apr 29, 2015 - [AD 2014-11-07](https://openairdocs.org/ad/2014-11-07): Main Rotor System · Agusta A109A, A109A II, A109C and 6 more. Effective Jun 18, 2014 - [AD 2013-20-51](https://openairdocs.org/ad/2013-20-51): Tail rotor system · Agusta A109A, A109A II, A109C and 6 more. Effective Oct 25, 2013 - [AD 2013-06-51](https://openairdocs.org/ad/2013-06-51): Equipment/Furnishings · Agusta A109, A109A, A109A II and 43 more. Effective Jul 15, 2013 - [AD 2013-05-22](https://openairdocs.org/ad/2013-05-22): Tail rotor pitch control link assembly · Agusta A109, A109A, A109A II and 5 more. Effective Apr 30, 2013 - [AD 2011-17-14](https://openairdocs.org/ad/2011-17-14): Hub plug · Agusta A109A and A109A II. Effective Sep 12, 2011 - [AD 2011-17-01](https://openairdocs.org/ad/2011-17-01): Main rotor scissor fitting assembly · Agusta A109A, A109A II, A109C and 1 more. Effective Sep 12, 2011 - [AD 2008-24-06](https://openairdocs.org/ad/2008-24-06): Tail rotor blade · Agusta A109A and A109A II. Effective Dec 30, 2008 - [AD 2008-09-03](https://openairdocs.org/ad/2008-09-03): Grooved clamp fixing · Agusta A109A, A109A II and A109C. Effective May 13, 2008 - [AD 2002-20-05](https://openairdocs.org/ad/2002-20-05): Rescue hoists · Agusta A109, A109A, A109A II and 31 more. Effective Nov 7, 2002 - [AD 2000-15-20](https://openairdocs.org/ad/2000-15-20): Main Rotor Blade Spar · Agusta A109A and A109A II. Effective Sep 19, 2000 - [AD 2000-08-02](https://openairdocs.org/ad/2000-08-02): Transmission · Agusta A109A, A109A II and A109C. Effective May 1, 2000 - [AD 95-13-10](https://openairdocs.org/ad/95-13-10): Vertical Fin Attachment · Agusta A109A, A109A II and A109C. Effective Aug 9, 1995 - [AD 94-22-04](https://openairdocs.org/ad/94-22-04): Main Rotor Retention Straps · Agusta A109A and A109A II. Effective Dec 1, 1994 - [AD 91-08-05](https://openairdocs.org/ad/91-08-05): Main Rotor Blade · Agusta A109A and A109A II. Effective May 7, 1991 - [AD 84-13-06 R2](https://openairdocs.org/ad/84-13-06-R2): Tail Rotor Blade Grip · Agusta A109A and A109A II. Effective Aug 30, 1987 - [AD 79-19-07 R1](https://openairdocs.org/ad/79-19-07-R1): Tail Rotor Gearbox Mounting · Agusta A109A and A109A II. Effective Aug 16, 1982 - [AD 82-04-04](https://openairdocs.org/ad/82-04-04): Tail Boom Assemblies · Agusta A109A and A109A II. Effective Feb 19, 1982 - [AD 82-01-06](https://openairdocs.org/ad/82-01-06): Engine Mount Central Leg · Agusta A109A and A109A II. Effective Feb 8, 1982 - [AD 81-20-03](https://openairdocs.org/ad/81-20-03): Drive Shaft Support Bearings · Agusta A109A and A109A II. Effective Nov 12, 1981 - [AD 81-13-11](https://openairdocs.org/ad/81-13-11): Main Rotor Blades · Agusta A109A and A109A II. Effective Jul 20, 1981 - [AD 81-02-04](https://openairdocs.org/ad/81-02-04): Main Blade Pitch Control · Agusta A109, A109A and A109A II. Effective Jan 5, 1981 - [AD 80-22-09](https://openairdocs.org/ad/80-22-09): Engine Mount Structure · Agusta A109A and A109A II. Effective Nov 6, 1980 - [AD 80-16-02](https://openairdocs.org/ad/80-16-02): Nose Large Mount Assembly · Agusta A109A and A109A II. Effective Aug 11, 1980 - [AD 80-15-12](https://openairdocs.org/ad/80-15-12): Main Rotor Mast Bearing · Agusta A109A and A109A II. Effective Aug 7, 1980 - [AD 80-07-10](https://openairdocs.org/ad/80-07-10): Engine Operating Condition · Agusta A109A and A109A II. Effective Mar 27, 1980 - [AD 78-24-02](https://openairdocs.org/ad/78-24-02): Main Transmission · Agusta A109, A109A, A109A II and 3 more. Effective Nov 24, 1978 ### Matched by engine (Allison 250 SER 317HP) None in force. ### Historical (superseded or no longer in force) - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 - [AD 2015-22-51](https://openairdocs.org/ad/2015-22-51) (historical): Main Rotor Blade · Agusta A109A and A109A II. Effective Feb 16, 2016 - [AD 2015-25-04](https://openairdocs.org/ad/2015-25-04) (historical): Tail Rotor Control System · Agusta A109A and A109A II. Effective Dec 24, 2015 - [AD 2010-02-51](https://openairdocs.org/ad/2010-02-51) (historical): Main rotor scissor fitting assembly fixing bolt · Agusta A109A, A109A II, A109C and 1 more - [AD 99-27-12](https://openairdocs.org/ad/99-27-12) (historical): Tail Rotor Blade · Agusta A109A and A109A II. Effective Jan 5, 2000 - [AD 99-26-13](https://openairdocs.org/ad/99-26-13) (historical): Blade Crack Inspection · Agusta A109A and A109A II. Effective Jan 4, 2000 ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N109SF. ## FAA accident and incident reports None matched to N109SF. ## Service difficulty reports None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. ## STCs that may be installed (OpenAirDocs) (56, first 50) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the airframe (Agusta A109A II) - [STC SR04842NY](https://openairdocs.org/stc/SR04842NY): Installation of RMCI Inc. Expandable Rotorcraft Diagnostic System (XRDS). Sterling Helicopter - [STC SR00182IB](https://openairdocs.org/stc/SR00182IB): Installation of the Avidyne Integrated Flight Display (IFD) Navigator(s). Horizon Design Services Ltd - [STC SR04557AT](https://openairdocs.org/stc/SR04557AT): Cabin and crew floor protector installations. Helifab East LLC - [STC SR00084IB](https://openairdocs.org/stc/SR00084IB): Installation of Alternative Inflation System for Emergency Flotation System. SAAB AKTIEBOLAG - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SR01476SE](https://openairdocs.org/stc/SR01476SE): Installation of a Supplemental Lighting System. Aviation Specialties Unlimited Inc - [STC SR04453CH](https://openairdocs.org/stc/SR04453CH): Installation of Appareo Systems LLC Stratus ES & Stratus ESG ADS-B transponder. Appareo Systems LLC - [STC SR02124SE](https://openairdocs.org/stc/SR02124SE): Installation functionality. of Data Garmin Required: transponders: (1) Garmin GTX Master 345/345R Drawing with List ADS-B (MDL), Out and In 005-00734-A4, functionality;. Garmin International Inc - [STC SR04390CH](https://openairdocs.org/stc/SR04390CH): Installation of an Electronic Flight Instrument System (EFIS) in accordance with StandardAero Master Data List 1036284, Revision (B), dated June 5, 2019 or later FAA approved revision. StandardAero Business Aviation Services LLC - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SR01812LA](https://openairdocs.org/stc/SR01812LA): Installation of Apical Industries, Inc. Emergency Float Kit. Apical Industries Inc. dba Dart Aerospace - [STC SR02257CH](https://openairdocs.org/stc/SR02257CH): Install air ambulance conversion. Snaky Creek Enterprises LLC dba Spectrum Aeromed - [STC SR02258SE](https://openairdocs.org/stc/SR02258SE): Installation of a tail rotor pedal lockout kit. Dart Aerospace USA Inc - [STC SR02377AK](https://openairdocs.org/stc/SR02377AK): Installation of a fixed mounted Max-Viz Enhanced Vision System (EVS) Model 1500 to include a sensor Line Replaceable Unit (LRU) with conformal housing, power supply, Detached Electrical Box (DEB) and a glareshield-mounted, dedicated display monitor. Avio Design Group Inc - [STC SR03055CH](https://openairdocs.org/stc/SR03055CH): Installation of Flight Data Monitoring System. MSP Aero LLC - [STC SR02487AK](https://openairdocs.org/stc/SR02487AK): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System. ADS-B Technologies, LLC - [STC SR00060DE](https://openairdocs.org/stc/SR00060DE): Installation of Belt-Driven Vapor Cycle Air Conditioning System Kit P/N A109-00-011 with dual condenser blower configuration. RSG Products Inc - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SR01124NY-D](https://openairdocs.org/stc/SR01124NY-D): Installation of an Aeromedical Liquid Oxygen System. Sikorsky Aircraft Corporation - [STC SR000291DE](https://openairdocs.org/stc/SR000291DE): Installation of Bleed Air Cabin Heating/ Windshield Defroster System. Air Comm Corporation - [STC SH4676SW](https://openairdocs.org/stc/SH4676SW): Installation of Tail Rotor Floodlights on the upper surface of the horizontal stabilizer. DeVore Aviation Corporation of America, a New Mexico Corporation - [STC SH2458SO](https://openairdocs.org/stc/SH2458SO): Installation of FLIR Systems, Inc., Model 2000/2500 Series Thermal Imager System. Bell Helicopter Textron Inc. Lists A109 Series - [STC SR02232LA](https://openairdocs.org/stc/SR02232LA): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin AT Inc - [STC SR01963AT](https://openairdocs.org/stc/SR01963AT): Manufacture of Replacement Windshields. Bell Helicopter Textron Inc - [STC SR02189NY](https://openairdocs.org/stc/SR02189NY): Iinstallation of SkyTrac ISAT-100 Airborne Position/Data Communicator System. SkyTrac Systems Ltd - [STC SR01876SE](https://openairdocs.org/stc/SR01876SE): ONE ONLY STC, SN 7356: Installation of a Supplemental Lighting System. Aviation Specialties Unlimited Inc - [STC SR01868SE](https://openairdocs.org/stc/SR01868SE): Installation of a Supplemental Lighting System;. Aviation Specialties Unlimited Inc - [STC SR01866SE](https://openairdocs.org/stc/SR01866SE): ONE ONLY STC, SN 7273: Installation of a Supplemental Lighting System; installed. Aviation Specialties Unlimited Inc - [STC SR00811NY](https://openairdocs.org/stc/SR00811NY): Installation of Technisonic Industries Limited TFM-138 series transceiver models. Technisonic Industries Limited - [STC SR01854NY](https://openairdocs.org/stc/SR01854NY): Installation of Continuous Ignition System. CJ Systems Aviation Group - [STC SR01834NY](https://openairdocs.org/stc/SR01834NY): Installation of Globalstar Satellite Telephone System. Atlantic Avionics Inc - [STC SH3533NM](https://openairdocs.org/stc/SH3533NM): Cockpit sun visor installation. Rosen Sunvisor Systems LLC - [STC SH3811NM](https://openairdocs.org/stc/SH3811NM): Install a combination attendant seat and patient litter kit assembly. Aero Credit Company Inc - [STC SR01844AT](https://openairdocs.org/stc/SR01844AT): Installation of Tail Rotor Pedal Lockout Kit. Bell Helicopter Textron Inc - [STC SH5770NM](https://openairdocs.org/stc/SH5770NM): Installation of Aero transport isolette system. Aero Inc - [STC SH638NE](https://openairdocs.org/stc/SH638NE): Installation of Parker Model 2C35-3 fuel tank mounted auxiliary fuel boost pumps to be used interchangeably with the standard Agusta P/N 109-0611-53-1 electric fuel pumps. Parker Hannifin Corp - [STC SR09200RC](https://openairdocs.org/stc/SR09200RC): Installation of a rotor dynamics americas, inc RDA 3303 airborne vibration Monitoring system. Rotor Dynamics Americas - [STC SR00291DE](https://openairdocs.org/stc/SR00291DE): Installation of bleed air cabin heating/windshield defroster system. Air Comm Corporation - [STC SH728NE](https://openairdocs.org/stc/SH728NE): Installation of lightweight freon air conditioning system. Advanced Flight System, Inc - [STC SH758NE](https://openairdocs.org/stc/SH758NE): Emergency medical service (EMS) interior kit installation. Custom Aircraft Completions, Inc - [STC SH701NE](https://openairdocs.org/stc/SH701NE): Installation of crew and cabin doors. Agusta Aerospace Corporation - [STC SH2244NM](https://openairdocs.org/stc/SH2244NM): Installation of Silver Instruments Fueltron IIIPT-1GS, IIIPT-1PS, IIIPT-1LS, or IIIPT-1KS digital fuel flow indicating system. Arnav Systems Inc - [STC SH2803SW](https://openairdocs.org/stc/SH2803SW): Installation of a Racal RNAV II system. Kosola & Associates Inc - [STC SH795GL](https://openairdocs.org/stc/SH795GL): Installation of Facet Enterprises engine oil scavenge filter kits Nos. 1741260 and 1741270. Facet Filter Products - [STC SH246NE](https://openairdocs.org/stc/SH246NE): Installation of Air Cruisers Co. inflatable emergency floats. Air Cruisers Company - [STC SH359NE](https://openairdocs.org/stc/SH359NE): Installation of advanced vapor cycle air conditioning system. Advanced Flight System, Inc - [STC SH3792NM](https://openairdocs.org/stc/SH3792NM): Installation of FC/FT-10 digital fuel flow indicating system. Arnav Systems, Inc - [STC SH3679NM](https://openairdocs.org/stc/SH3679NM): Install medical oxygen system. Aero Credit Company, Inc - [STC SH3833NM](https://openairdocs.org/stc/SH3833NM): Installation of a dual litter system. Aero Credit Company Inc - [STC SH3852NM](https://openairdocs.org/stc/SH3852NM): Install three Wulfsberg transmitters/receivers (RT30, RT138, RT450) as an auxiliary radio installation. Aero Credit Company, Inc All 56: https://openairdocs.org/aircraft/N109SF/stcs.md ## Related - Other Agusta A109A II aircraft: https://openairdocs.org/model/agusta-a109a-ii/aircraft.md - The Allison 250 SER 317HP engine: https://openairdocs.org/engine/allison-250-ser-317hp.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.