# N621SC: Agusta A109S

- Status: Valid registration
- Airframe: [Agusta A109S](https://openairdocs.org/model/agusta-a109s) (registry code 0260103, 8 seats)
- Engine: [Pratt & Whitney Canada PW207C](https://openairdocs.org/engine/pratt-whitney-canada-pw207c) (registry code 52203)
- Data sheets: [TCDS H7EU](https://openairdocs.org/tcds/H7EU) (Leonardo S.p.A.), [TCDS E42NE](https://openairdocs.org/tcds/E42NE) (Pratt & Whitney Canada Corp.) (OpenAirDocs)
- Serial number: 22078
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, normal
- Airworthiness date: May 26, 2008
- Certificate issued: August 12, 2021
- Expires: August 31, 2028
- Mode S code: A81B87
- Registered owner: [South Bay Helicopter Service Inc](https://openairdocs.org/faa-owner/SOUTH%20BAY%20HELICOPTER%20SERVICE%20INC)
- Location: [Hayward, CA](https://openairdocs.org/faa-place/CA/Hayward)
- Owner type: Corporation
- Owner's area on the map: 37.6738° N, 122.0878° W: Placed by OpenAirDocs at the center of ZIP code 94541, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=621SC
- Page: https://openairdocs.org/aircraft/N621SC

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): 43 in force

### Matched by airframe (Agusta A109S)

- [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 2026-09-09](https://openairdocs.org/ad/2026-09-09): Fuselage structure · Leonardo A109E and A109S. Effective Jun 17, 2026
- [AD 2025-18-01](https://openairdocs.org/ad/2025-18-01): Main Rotor Head · Leonardo A109E, A109S, AW109SP and 2 more. Effective Sep 25, 2025
- [AD 2025-09-10](https://openairdocs.org/ad/2025-09-10): Extinguishing System · Leonardo A109E, A109S and AW109SP. Effective Jun 16, 2025
- [AD 2025-07-07](https://openairdocs.org/ad/2025-07-07): Main Rotor Blades · Leonardo A109C, A109E, A109S and 1 more. Effective May 23, 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 2025-03-03](https://openairdocs.org/ad/2025-03-03): Cabin Equipment/Furnishings · Leonardo A109E, A109K2, A109S and 4 more. Effective Feb 19, 2025
- [AD 2024-15-11](https://openairdocs.org/ad/2024-15-11): Tail Rotor System · Leonardo A109C, A109E, A109K2 and 2 more. Effective Oct 21, 2024
- [AD 2023-25-08](https://openairdocs.org/ad/2023-25-08): Main Rotor System · Leonardo A109E, A109S, AW109SP and 2 more. Effective Feb 2, 2024
- [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 2022-11-06](https://openairdocs.org/ad/2022-11-06): rotorcraft Flight Control · Leonardo A109S. Effective Jul 6, 2022
- [AD 2022-07-11](https://openairdocs.org/ad/2022-07-11): Tail Rotor System · Leonardo A109C, A109K2, A109E and 2 more. Effective May 5, 2022
- [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 2021-25-01](https://openairdocs.org/ad/2021-25-01): Electrical Power System Wiring · Leonardo A109S and AW109SP. Effective Jan 24, 2022
- [AD 2021-24-11](https://openairdocs.org/ad/2021-24-11): Main Landing Gear Strut/Axle/Truck · Leonardo A109E, A109S and AW109SP. Effective Jan 14, 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 2021-16-13](https://openairdocs.org/ad/2021-16-13): Stabilizer Control System · Leonardo A109S and AW109SP. Effective Sep 22, 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 2021-05-04](https://openairdocs.org/ad/2021-05-04): Fuselage Wiring, Baggage Fairings Modification · Leonardo A109S and AW109SP. Effective Apr 16, 2021
- [AD 2020-21-21](https://openairdocs.org/ad/2020-21-21): Main Rotor Head · Leonardo A109E, A109S, A119 and 2 more. Effective Nov 24, 2020
- [AD 2020-20-02](https://openairdocs.org/ad/2020-20-02): Extinguishing System · Leonardo A109E, A109S and AW109SP. Effective Nov 3, 2020
- [AD 2020-15-16](https://openairdocs.org/ad/2020-15-16): Tail Rotor Drive System · Leonardo A109E, A109K2, A109S and 3 more. Effective Aug 27, 2020
- [AD 2018-16-08](https://openairdocs.org/ad/2018-16-08): Rotorcraft Cooling Fan System · Leonardo A109E, A109S and AW109SP. Effective Aug 20, 2018
- [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 2018-07-02](https://openairdocs.org/ad/2018-07-02): Main Rotor Blades · Agusta A109E, A109S, A119 and 2 more. Effective Apr 13, 2018
- [AD 2017-25-17](https://openairdocs.org/ad/2017-25-17): Elevator Structure · Agusta A109S and AW109SP. Effective Jan 4, 2018
- [AD 2017-16-02](https://openairdocs.org/ad/2017-16-02): Cabin Equipment/Furnishings · Agusta A109S. Effective Sep 5, 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 2015-11-08](https://openairdocs.org/ad/2015-11-08): Tail Rotor System · Agusta A109C, A109E, A109K2 and 2 more. Effective Jun 24, 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 2015-05-05](https://openairdocs.org/ad/2015-05-05): Main Rotor System · Agusta A109S, A119, AW109SP and 1 more. Effective Apr 23, 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 2012-23-02](https://openairdocs.org/ad/2012-23-02): Powerplant system · Agusta A109E and A109S. Effective Jan 16, 2013
- [AD 2012-21-07](https://openairdocs.org/ad/2012-21-07): DC Power/Distribution System · Agusta A109S. Effective Nov 27, 2012
- [AD 2009-12-07](https://openairdocs.org/ad/2009-12-07): Cargo hook lever · Agusta A109E, A109S, A119 and 1 more. Effective Jul 17, 2009
- [AD 2008-12-11](https://openairdocs.org/ad/2008-12-11): Emergency door release · Agusta A109E, A109S and A119. Effective Jul 1, 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

### Matched by engine (Pratt & Whitney Canada PW207C)

- [AD 2013-03-21](https://openairdocs.org/ad/2013-03-21): Power turbine (PT) disks · Pratt & Whitney Canada PW206B, PW206B2, PW206C and 5 more. Effective Mar 26, 2013
- [AD 2009-03-05](https://openairdocs.org/ad/2009-03-05): Compressor turbine (CT) disc bore · Pratt & Whitney Canada PW206A, PW206B, PW206B2 and 5 more. Effective Mar 27, 2009

### 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 2021-17-18](https://openairdocs.org/ad/2021-17-18) (historical): Tail Rotor System · Leonardo A109C, A109E, A109K2 and 2 more. Effective Sep 7, 2021
- [AD 2018-07-08](https://openairdocs.org/ad/2018-07-08) (historical): Tail Rotor Drive System · Agusta A109E, A109K2, A109S and 3 more. Effective Apr 26, 2018
- [AD 2014-04-14](https://openairdocs.org/ad/2014-04-14) (historical): Main Rotor System · Agusta A109S, A119, AW109SP and 1 more. Effective Apr 7, 2014
- [AD 2014-02-08](https://openairdocs.org/ad/2014-02-08) (historical): Tail Rotor System · Agusta A109C, A109E, A109K2 and 2 more. Effective Mar 7, 2014
- [AD 2011-27-08](https://openairdocs.org/ad/2011-27-08) (historical): Elevator Structure · Agusta A109S and AW109SP. Effective Feb 8, 2012

## Information bulletins (advisory) (2 in force)

- [SAIB SW-18-13](https://openairdocs.org/saib/SW-18-13): Main Transmission Plate Fitting. Issued Apr 30, 2018
- [SAIB SW-12-45](https://openairdocs.org/saib/SW-12-45): Garmin Model 400W/500W Series GPS-WAAS Navigation System. Issued Oct 3, 2012

## NTSB investigations

None matched to N621SC.

## FAA accident and incident reports

None matched to N621SC.

## Reports on N621SC not matched to an aircraft (1)

They name N621SC, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19990626022369I](https://openairdocs.org/incident/19990626022369I), Jun 26, 1999: Cessna 441 (N621SC), Beaver Falls, PA. (-23) On July 2, 1999, this office conducted an interview with the pilot in command of N621SC. The pilot stated: on June 26, 1999, at approx. 0619 local,…

## 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.

## Service difficulty reports on N621SC not matched to an aircraft (2)

They name N621SC, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR 2002FA0000129](https://openairdocs.org/sdr/2002FA0000129), Jan 18, 2002: RIB. CRACKED. DURING A SHCEDULED INSPECTION, IT WAS NOTED THAT THE RIGHT WING CENTER SECTION CANTED RIB CAP P/N: 5722206-2 (RCWS 26.85) HAD A CRACK ALONG THE BEND RADIUS AFT 
- [SDR 2002FA0000128](https://openairdocs.org/sdr/2002FA0000128), Jan 18, 2002: RIB. CRACKED. DURING A SHCEDULED INSPECTION, IT WAS NOTED THAT THE LEFT WING CENTER SECTION CANTED RIB CAP P/N: 5722206-1 (LCWS 26.85) HAD A CRACK ALONG THE BEND RADIUS AFT O

## STCs that may be installed (OpenAirDocs) (31)

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 A109S)

- [STC SR04842NY](https://openairdocs.org/stc/SR04842NY): Installation of RMCI Inc. Expandable Rotorcraft Diagnostic System (XRDS). Sterling Helicopter
- [STC SR04195CH](https://openairdocs.org/stc/SR04195CH): Installation of Heli-Preheat Kit, P/N TA3134-1 for 115-volt application. Hartzell Propeller LLC
- [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 SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC
- [STC SR09917AC](https://openairdocs.org/stc/SR09917AC): Installation of an Advanced Life Support System (ALSS) airborne EMS air ambulance interior. AMS Heli Design LLC
- [STC SR00949SE](https://openairdocs.org/stc/SR00949SE): Fabrication of Dart D119-647-011 Bearpaws. Dart Aerospace USA 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 SR02974CH](https://openairdocs.org/stc/SR02974CH): Install air ambulance conversion. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SR02977CH](https://openairdocs.org/stc/SR02977CH): Install of a medical floor liner. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SR02978CH](https://openairdocs.org/stc/SR02978CH): Install of Shore Power Mechanical Provisions. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SR02980CH](https://openairdocs.org/stc/SR02980CH): Install of an interior panel system. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SR02981CH](https://openairdocs.org/stc/SR02981CH): Installation of a medical attendant seat, fire extinguisher, utility track, and cylinder mount. Spectrum Aeromed LLC dba Spectrum Aeromed
- [STC SR02982CH](https://openairdocs.org/stc/SR02982CH): Installation of equipment rails and mounts. Spectrum Aeromed 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 SR02988CH](https://openairdocs.org/stc/SR02988CH): Installation of Inlet Barrier Filter system in accordance with Aerospace Filtration Systems, Inc. Drawing 124001-010, Revision C, dated May 26, 2011, or later FAA approved revision. Donaldson Company Inc
- [STC SR02487AK](https://openairdocs.org/stc/SR02487AK): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System. ADS-B Technologies, LLC
- [STC SR09438RC](https://openairdocs.org/stc/SR09438RC): Installation of Night Vision Goggle Compatible Lighting System. Aero Dynamix Inc
- [STC SR03096NY](https://openairdocs.org/stc/SR03096NY): Installation of an Aeronautical Accessories Super Night Scanner Searchlight. AgustaWestland Philadelphia Corporation
- [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 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 SR09639RC](https://openairdocs.org/stc/SR09639RC): Installation of a Thommen Air Data Display. RSG AeroDesign LLC
- [STC SR02232LA](https://openairdocs.org/stc/SR02232LA): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin AT Inc
- [STC SR09475RC](https://openairdocs.org/stc/SR09475RC): Installation of Tinted Window Shades. Heritage Aviation Ltd
- [STC SH3811NM](https://openairdocs.org/stc/SH3811NM): Install a combination attendant seat and patient litter kit assembly. Aero Credit Company Inc

## Related

- Other Agusta A109S aircraft: https://openairdocs.org/model/agusta-a109s/aircraft.md
- The Pratt & Whitney Canada PW207C engine: https://openairdocs.org/engine/pratt-whitney-canada-pw207c.md

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