# N312B: Aerospatiale AS350BA

- Status: Valid registration
- Airframe: [Aerospatiale AS350BA](https://openairdocs.org/model/aerospatiale-as350ba) (registry code 8680817, 6 seats)
- Engine: [Turbomeca ARRIEL-1SER](https://openairdocs.org/engine/turbomeca-arriel-1ser) (registry code 60030)
- Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU) (Airbus Helicopters) (OpenAirDocs)
- Serial number: 2243
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, normal
- Airworthiness date: December 10, 1992
- Certificate issued: July 14, 2026
- Expires: July 31, 2033
- Mode S code: A34E58
- Registered owner: [Patriot Aviation Inc](https://openairdocs.org/faa-owner/PATRIOT%20AVIATION%20INC)
- Location: [Greenville, DE](https://openairdocs.org/faa-place/DE/Greenville)
- Owner type: Non-citizen corporation
- Owner's area on the map: 39.7965° N, 75.6128° W: Placed by OpenAirDocs at the center of ZIP code 19807, 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=312B
- Page: https://openairdocs.org/aircraft/N312B

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): 77 in force

### Matched by airframe (Aerospatiale AS350BA)

- [AD 2026-20-03](https://openairdocs.org/ad/2026-20-03): Placards and Markings · Airbus Helicopters AS350B, AS350BA, AS350B1 and 11 more. Effective Nov 5, 2026
- [AD 2026-16-01](https://openairdocs.org/ad/2026-16-01): Main rotor drive · Airbus Helicopters AS350B, AS350BA, AS350B1 and 5 more. Effective Sep 10, 2026
- [AD 2026-12-10](https://openairdocs.org/ad/2026-12-10): Equipment/Furnishings · Airbus Helicopters AS350B, AS350BA, AS350B1 and 3 more. Effective Aug 3, 2026
- [AD 2026-12-09](https://openairdocs.org/ad/2026-12-09): Time Limits/Maintenance Checks · Airbus Helicopters AS350B, AS350BA, AS350B1 and 1 more. Effective Jul 21, 2026
- [AD 2026-09-15](https://openairdocs.org/ad/2026-09-15): Tail rotor head · Airbus Helicopters AS350B, AS350BA, AS350B1 and 9 more. Effective Jul 21, 2026
- [AD 2026-12-03](https://openairdocs.org/ad/2026-12-03): Main rotor gearbox · Airbus Helicopters AS350B, AS350B1, AS350B2 and 11 more. Effective Jul 14, 2026
- [AD 2026-07-12](https://openairdocs.org/ad/2026-07-12): Main rotor transmission mount · Airbus Helicopters AS350B, AS350BA, AS350B1 and 3 more. Effective Apr 29, 2026
- [AD 2025-09-13](https://openairdocs.org/ad/2025-09-13): Doors · Airbus Helicopters AS350B, AS350BA, AS350B1 and 9 more. Effective Jul 7, 2025
- [AD 2024-20-07](https://openairdocs.org/ad/2024-20-07): Emergency Equipment; Emergency Flotation Section · Apical Emergency Float Kit, P/N 20498 (STC SR00780LA or 12 others). Effective Dec 5, 2024
- [AD 2024-15-08](https://openairdocs.org/ad/2024-15-08): Main Rotor Blades · Airbus Helicopters AS350B, AS350BA, AS350B1 and 7 more. Effective Oct 15, 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 2022-10-51](https://openairdocs.org/ad/2022-10-51): Flight Control System · Airbus Helicopters AS350B, AS350B1, AS350B2 and 22 more. Effective Jun 7, 2022
- [AD 2021-03-16 R1](https://openairdocs.org/ad/2021-03-16-R1): Passenger/Crew Doors · Airbus Helicopters AS350B, AS350B1, AS350B2 and 9 more. Effective Mar 24, 2022
- [AD 2022-01-01](https://openairdocs.org/ad/2022-01-01): Main Rotor System · Airbus Helicopters AS350B, AS350BA, AS350B1 and 17 more. Effective Mar 7, 2022
- [AD 2022-02-04](https://openairdocs.org/ad/2022-02-04): Hydraulic Power System Wiring · Airbus Helicopters AS350B, AS350B2, AS350B3 and 1 more. Effective Feb 25, 2022
- [AD 2021-17-17](https://openairdocs.org/ad/2021-17-17): Cabin Equipment/Furnishings · Airbus Helicopters EC135P3, EC135T3, MBB-BK 117 C-2 and 32 more. Effective Nov 22, 2021
- [AD 2021-19-09](https://openairdocs.org/ad/2021-19-09): Cabin Equipment/Furnishings · Airbus Helicopters AS355E, AS355F, AS355F1 and 6 more. Effective Nov 4, 2021
- [AD 2021-16-16](https://openairdocs.org/ad/2021-16-16): Rotorcraft Flight Control · Airbus Helicopters AS355E, AS355F, AS355F1 and 9 more. Effective Oct 13, 2021
- [AD 2021-16-11](https://openairdocs.org/ad/2021-16-11): Tail Rotor Control System · Airbus Helicopters AS355E, AS355F, AS355F1 and 9 more. Effective Oct 6, 2021
- [AD 2021-14-07](https://openairdocs.org/ad/2021-14-07): Cabin Equipment/Furnishings · Airbus Helicopters AS332C, AS332C1, AS332L and 12 more. Effective Aug 19, 2021
- [AD 2021-07-15](https://openairdocs.org/ad/2021-07-15): Tail Rotor Drive Shaft · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective May 7, 2021
- [AD 2021-05-09](https://openairdocs.org/ad/2021-05-09): Tail Rotor Control System · Airbus Helicopters AS355E, AS355F, AS355F1 and 8 more. Effective Apr 16, 2021
- [AD 2021-04-13](https://openairdocs.org/ad/2021-04-13): Main Rotor Mast Inner Race Rings · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Apr 14, 2021
- [AD 2021-04-17](https://openairdocs.org/ad/2021-04-17): Tail Rotor Blades · Airbus Helicopters AS355E, AS355F, AS355F1 and 7 more. Effective Mar 23, 2021
- [AD 2020-22-20](https://openairdocs.org/ad/2020-22-20): Main Rotor Gearbox · Airbus Helicopters AS355E, AS355F, AS355F1 and 12 more. Effective Dec 14, 2020
- [AD 2015-17-01 R1](https://openairdocs.org/ad/2015-17-01-R1): Tail Rotor · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Sep 11, 2020
- [AD 2020-02-23](https://openairdocs.org/ad/2020-02-23): Landing gear · Emergency Floats (Dart Aerospace ULC STC SR00470LA or SR00645LA). Effective Feb 28, 2020
- [AD 2019-16-16](https://openairdocs.org/ad/2019-16-16): Engine Air Intake System · Airbus Helicopters AS350B, AS350B1, AS350B2 and 2 more. Effective Sep 26, 2019
- [AD 2018-25-17](https://openairdocs.org/ad/2018-25-17): Air Conditioning System Wiring · Airbus Helicopters 206A, 206B, 206L and 13 more. Effective Jan 22, 2019
- [AD 2018-02-02](https://openairdocs.org/ad/2018-02-02): Main Gearbox Mast · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Feb 12, 2018
- [AD 2017-22-05](https://openairdocs.org/ad/2017-22-05): Hydraulic Pump (Electric/Engine), Main · Airbus Helicopters AS350B, AS350B1, AS350B2 and 5 more. Effective Dec 11, 2017
- [AD 2016-25-20](https://openairdocs.org/ad/2016-25-20): Main Rotor Drive System · Airbus Helicopters AS355E, AS355F, AS355F1 and 13 more. Effective Jan 31, 2017
- [AD 2016-05-06](https://openairdocs.org/ad/2016-05-06): Rotorcraft tailboom · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Apr 8, 2016
- [AD 2015-17-11](https://openairdocs.org/ad/2015-17-11): Main Rotor System · Airbus Helicopters AS355E, AS355F, AS355F1 and 13 more. Effective Sep 29, 2015
- [AD 2014-05-10](https://openairdocs.org/ad/2014-05-10): Tail Rotor · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective May 2, 2014
- [AD 2014-05-07](https://openairdocs.org/ad/2014-05-07): Tail Rotor Control System · Airbus Helicopters AS355E, AS355F, AS355F1 and 9 more. Effective Apr 15, 2014
- [AD 2014-04-11](https://openairdocs.org/ad/2014-04-11): Tail rotor blades · Airbus Helicopters AS355E, AS355F, AS355F1 and 8 more. Effective Apr 9, 2014
- [AD 2014-02-05](https://openairdocs.org/ad/2014-02-05): Main Rotor Control · Airbus Helicopters AS350B, AS350B1, AS350B2 and 5 more. Effective Mar 7, 2014
- [AD 2013-23-10](https://openairdocs.org/ad/2013-23-10): Fuselage Miscellaneous Structure · Airbus Helicopters AS355E, AS355F, AS355F1 and 8 more. Effective Dec 30, 2013
- [AD 2013-23-09](https://openairdocs.org/ad/2013-23-09): Doors · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Dec 27, 2013
- [AD 2013-16-03](https://openairdocs.org/ad/2013-16-03): Tail Rotor Gearbox · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Oct 22, 2013
- [AD 2013-17-01](https://openairdocs.org/ad/2013-17-01): Tail rotor control system · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Oct 9, 2013
- [AD 2013-10-51](https://openairdocs.org/ad/2013-10-51): Rotorcraft Servo System · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Jul 31, 2013
- [AD 2013-08-19](https://openairdocs.org/ad/2013-08-19): Fuselage Door Hinges · Airbus Helicopters AS355E, AS355F, AS355F1 and 10 more. Effective Jun 5, 2013
- [AD 2012-25-01](https://openairdocs.org/ad/2012-25-01): Emergency Equipment · Airbus Helicopters AS355E, AS355F, AS355F1 and 11 more. Effective Jun 5, 2013
- [AD 2012-26-07](https://openairdocs.org/ad/2012-26-07): AERAZUR emergency flotation gear container assemblies · Airbus Helicopters AS350BA. Effective Feb 11, 2013
- [AD 2012-17-03](https://openairdocs.org/ad/2012-17-03): Hydraulic Power System · Airbus Helicopters AS350B, AS350B1, AS350B2 and 3 more. Effective Oct 11, 2012
- [AD 2011-18-12](https://openairdocs.org/ad/2011-18-12): Vertical stabilizer spar/rib structure · Airbus Helicopters AS355E, AS355F, AS355F1 and 8 more. Effective Feb 8, 2012
- [AD 2011-10-12](https://openairdocs.org/ad/2011-10-12): Pinion · Airbus Helicopters AS350B, AS350B1, AS350B2 and 3 more. Effective Jun 22, 2011
- [AD 2010-22-08](https://openairdocs.org/ad/2010-22-08): Main rotor servo-controls and tail rotor servo-controls · Airbus Helicopters AS355E, AS355F, AS355F1 and 8 more. Effective Nov 26, 2010

### Matched by engine (Turbomeca ARRIEL-1SER)

None in force.

### Historical (superseded or no longer in force)

- [AD 2025-06-04](https://openairdocs.org/ad/2025-06-04) (historical): Main Rotor Gearbox · Airbus Helicopters AS350B, AS350B1, AS350B2 and 11 more. Effective May 9, 2025
- [AD 2023-01-04](https://openairdocs.org/ad/2023-01-04) (historical): Tail Rotor Head · Airbus Helicopters AS350B, AS350BA, AS350B1 and 9 more. Effective Mar 8, 2023
- [AD 2022-11-08](https://openairdocs.org/ad/2022-11-08) (historical): Electrical Power System, Aircraft Fuel System, Hydraulic Power System, Doors, Fuselage Structure, Main Rotor System, Main Rotor Drive System, Tail Rotor System, Tail Rotor Drive System, Rotorcraft Flight Control · Airbus Helicopters AS350B, AS350BA, AS350B1 and 5 more. Effective Jul 8, 2022
- [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 2021-05-02](https://openairdocs.org/ad/2021-05-02) (historical): Main Rotor System · Airbus Helicopters AS350B, AS350BA, AS350B1 and 12 more. Effective Apr 16, 2021
- [AD 2021-03-16](https://openairdocs.org/ad/2021-03-16) (historical): Passenger/Crew Doors · Airbus Helicopters AS355E, AS355F, AS355F1 and 9 more. Effective Mar 3, 2021
- [AD 2020-24-03](https://openairdocs.org/ad/2020-24-03) (historical): Rotorcraft Flight Control · Airbus Helicopters AS355E, AS355F, AS355F1 and 6 more. Effective Dec 16, 2020
- [AD 2018-18-12](https://openairdocs.org/ad/2018-18-12) (historical): Engine Air Intake System · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 2 more. Effective Sep 25, 2018
- [AD 2018-15-02](https://openairdocs.org/ad/2018-15-02) (historical): Tail Rotor Control System · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 8 more. Effective Aug 3, 2018
- [AD 2015-17-01](https://openairdocs.org/ad/2015-17-01) (historical): Tail Rotor · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 11 more. Effective Sep 24, 2015
- [AD 2014-07-52](https://openairdocs.org/ad/2014-07-52) (historical): Rotorcraft Tailboom · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 11 more. Effective Jun 25, 2014
- [AD 2013-21-01](https://openairdocs.org/ad/2013-21-01) (historical): Tail Rotor · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 11 more. Effective Oct 25, 2013
- [AD 2013-15-03](https://openairdocs.org/ad/2013-15-03) (historical): Hydraulic Pump, Main · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 5 more. Effective Aug 8, 2013
- [AD 2011-22-05](https://openairdocs.org/ad/2011-22-05) (historical): Tail rotor control system · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 11 more. Effective Nov 25, 2011
- [AD 2010-21-01](https://openairdocs.org/ad/2010-21-01) (historical): Fuselage Misc. Structure · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 8 more. Effective Oct 29, 2010
- [AD 2010-11-51](https://openairdocs.org/ad/2010-11-51) (historical): Tail Rotor Control System · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 9 more. Effective Sep 2, 2010
- [AD 2003-25-01](https://openairdocs.org/ad/2003-25-01) (historical): Hoist operator control unit · Airbus Helicopters AS-350B, AS-350B1, AS-350B2 and 11 more. Effective Jan 20, 2004
- [AD 2003-22-06](https://openairdocs.org/ad/2003-22-06) (historical): Tail rotor pitch control rod (control Rod) · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 10 more. Effective Dec 3, 2003
- [AD 2002-02-51](https://openairdocs.org/ad/2002-02-51) (historical): Metal bushing and the STARFLEX star arm end (arm end) · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 11 more
- [AD 2001-26-53](https://openairdocs.org/ad/2001-26-53) (historical): Servocontrols · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 3 more. Effective Feb 6, 2002
- [AD 2000-10-10](https://openairdocs.org/ad/2000-10-10) (historical): Main Gearbox Suspension Bi-directional Cross-Beam · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 7 more. Effective Jun 26, 2000
- [AD 86-15-10 R2](https://openairdocs.org/ad/86-15-10-R2) (historical): Main Rotor Head Components, the Main Gearbox (MGB) Suspension Bars, and Ground Resonance Prevention System Components · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 8 more. Effective May 23, 2000
- [AD 99-24-18](https://openairdocs.org/ad/99-24-18) (historical): Tail Rotor Spider Plate Bearing · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 8 more. Effective Dec 15, 1999
- [AD 98-24-35](https://openairdocs.org/ad/98-24-35) (historical): Outboard Spherical Bearing Ball · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 9 more. Effective Dec 17, 1998
- [AD 98-14-01](https://openairdocs.org/ad/98-14-01) (historical): Cross-Beam Crack Inspection · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 7 more. Effective Aug 3, 1998
- [AD 89-21-01](https://openairdocs.org/ad/89-21-01) (historical): Main Rotor Swash Plate Bearing · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 10 more. Effective May 3, 1990
- [AD 86-15-10 R1](https://openairdocs.org/ad/86-15-10-R1) (historical): Main Rotor Arms & Gearbox Bars · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 10 more. Effective Mar 22, 1990
- [AD 85-14-06 R1](https://openairdocs.org/ad/85-14-06-R1) (historical): Fuselage Tailboom Interface · Eurocopter France AS-350B, AS-350B1, AS-350B2 and 10 more. Effective Sep 12, 1985

All 105: https://openairdocs.org/aircraft/N312B/ads.md

## Information bulletins (advisory) (6 in force)

- [SAIB SW-17-23R2](https://openairdocs.org/saib/SW-17-23R2): Fuel System. Issued Jul 15, 2019
- [SAIB SW-15-20](https://openairdocs.org/saib/SW-15-20): Air Conditioning System Wiring. Issued Aug 13, 2015
- [SAIB SW-15-04](https://openairdocs.org/saib/SW-15-04): Cabin Ventilation Air Scoop Draining. Issued Nov 25, 2014
- [SAIB SW-11-07](https://openairdocs.org/saib/SW-11-07): Star Flex Arm Failures on Eurocopter France Model AS350, AS355, and EC130 Helicopters. Issued Dec 20, 2010
- [SAIB SW-09-49](https://openairdocs.org/saib/SW-09-49): Eurocopter AS350BA Emergency Floats. Issued Sep 1, 2009
- [SAIB SW-07-22R1](https://openairdocs.org/saib/SW-07-22R1): Serrated lock washers. Issued Apr 3, 2007
- [SAIB SW-17-23R1](https://openairdocs.org/saib/SW-17-23R1) (historical): Fuel System. Issued Mar 2, 2018

## NTSB investigations

None matched to N312B.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19911210059489I](https://openairdocs.org/incident/19911210059489I), Dec 10, 1991: Snias AS350B (N312B), Lihue, HI, Minor damage. Chip light followed by low oil pressure and fire light. Put out fire on landing. Uncontained engine failure.

## Service difficulty reports (5)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR HCM2001F00000](https://openairdocs.org/sdr/HCM2001F00000), Jun 13, 2001: ELECTRODE. MISSING. DURING A ROUTINE 100 HOUR INSPECTION IT WAS NOTED THAT THE ELECTRODE WAS MISSING FROM THE IGNITER PLUG. FURTHER INVESTIGATION REVEALED THAT IT HAD CAUSED DAMAGE
- [SDR HCMA0000215](https://openairdocs.org/sdr/HCMA0000215), Sep 30, 1998: HINGE LAMINATE. TORN. HINGE IS TORN BEYOND LIMITS. (X)
- [SDR HCMA9632](https://openairdocs.org/sdr/HCMA9632), Aug 6, 1996: LAMIFICATION. WORN EXCESS. REAR ROTOR LAMIFICATION IS WORN EXCESSIVELY. REMOVED AND REPLACED.
- [SDR HCMA9631](https://openairdocs.org/sdr/HCMA9631), Jun 10, 1996: LAMIFICATION. WORN EXCESS. PART IS WORN EXCESSIVELY. REMOVED AND REPLACED.
- [SDR HCMA962](https://openairdocs.org/sdr/HCMA962), Feb 9, 1996: REAR ROTOR. WORN EXCESS. PART IS WORN EXCESSIVELY. REMOVED AND REPLACED.

## STCs that may be installed (OpenAirDocs) (417, 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 (Aerospatiale AS350BA)

- [STC SR00653NY](https://openairdocs.org/stc/SR00653NY): nstallation and configuration of Maintenance Step on Transmission Deck Cowling. Airbus Helicopters Canada Limited
- [STC SH8154SW-D](https://openairdocs.org/stc/SH8154SW-D): Installation of a steerable landing light. Airbus Helicopters Inc
- [STC SR00643DE](https://openairdocs.org/stc/SR00643DE): Installation of a vapor cycle cabin airconditioning system. Air Comm Corporation
- [STC SR12433IB](https://openairdocs.org/stc/SR12433IB): Fabrication of equipment must be in accordance with the applicable Manufacturing Procedure document as shown on the attached FAA AML No. SR12433IB. Lake Central Air Services
- [STC SH4716NM](https://openairdocs.org/stc/SH4716NM): Redesign and relocation of cargo door hinges and relocation of cargo door latch. Turbolyft USA Corporation
- [STC SH4791NM](https://openairdocs.org/stc/SH4791NM): Installation of a Geneva Aviation Starter Generator,. Turbolyft USA Corporation
- [STC SH4929NM](https://openairdocs.org/stc/SH4929NM): Installation of high-volume air blower assembly. Turbolyft USA Corporation
- [STC SH4983NM](https://openairdocs.org/stc/SH4983NM): Installation of 2nd oil cooler. Turbolyft USA Corporation
- [STC SH5187NM](https://openairdocs.org/stc/SH5187NM): Installation of a video system. Turbolyft USA Corporation
- [STC SR00219SE](https://openairdocs.org/stc/SR00219SE): Installation of a color video camera on either the left, right, or both upper outboard surfaces of the horizontal stabilizer. Turbolyft USA Corporation
- [STC SR00222SE](https://openairdocs.org/stc/SR00222SE): Installation of a supplemental avionics console between the front seats. Turbolyft USA Corporation
- [STC SR00242SE](https://openairdocs.org/stc/SR00242SE): Fabrication and Installation of a new instrument panel and pedestal. Turbolyft USA Corporation
- [STC SR00326SE](https://openairdocs.org/stc/SR00326SE): Installation of Geneva Aviation Microwave System. Turbolyft USA Corporation
- [STC SR00361SE](https://openairdocs.org/stc/SR00361SE): Installation of baggage compartment utility rack. Turbolyft USA Corporation
- [STC SR00388SE](https://openairdocs.org/stc/SR00388SE): Fabrication and Installation of a rear communication console. Turbolyft USA Corporation
- [STC SR00474SE](https://openairdocs.org/stc/SR00474SE): Installation of a modular equipment rack in the left side only, right side only, or both side cargo compartments. Turbolyft USA Corporation
- [STC SR00643SE](https://openairdocs.org/stc/SR00643SE): Installation of Geneva Aviation Video System. Turbolyft USA Corporation
- [STC SR04464NY](https://openairdocs.org/stc/SR04464NY): Installation of the iPad Mount. Avio Design Group Inc
- [STC SR00407NY](https://openairdocs.org/stc/SR00407NY): Installation of litter kit fixed provisions P/N 350-200034-01 or 350-200034-02, and detachable provisions P/N 350-200034-03. Airbus Helicopters Canada Limited
- [STC SH4747NM](https://openairdocs.org/stc/SH4747NM): Fabrication and Installation of Electrical System Upgrade. AEM USA Inc
- [STC SR00521SE](https://openairdocs.org/stc/SR00521SE): Installation of Geneva Aviation Audio System. AEM USA Inc
- [STC SR02301SE](https://openairdocs.org/stc/SR02301SE): Installation of Geneva Aviation 28 - 14 VDC Power Converter. AEM USA Inc
- [STC SR02445SE](https://openairdocs.org/stc/SR02445SE): Installation of P178 Failsafe Audio Mixer. AEM USA Inc
- [STC SR03029NY](https://openairdocs.org/stc/SR03029NY): The installation of a SkyTrac ISAT-200 Airborne Position/Data Communicator upgrade. SkyTrac Systems Ltd
- [STC SR12293NY](https://openairdocs.org/stc/SR12293NY): Installation of a FreeFlight Systems RA-4500 MKII 5G Tolerant Radar Altimeter. FreeFlight Systems Ltd
- [STC SR11808LA](https://openairdocs.org/stc/SR11808LA): Installation of tail rotor assemblies, P/N 350TR1000-101/301. Van Horn Aviation LLC
- [STC SR12146IB](https://openairdocs.org/stc/SR12146IB): Installation of an AEM MTP136D Panel Mount FM Transceiver. Anodyne Electronics Manufacturing Corporation
- [STC SR00307DE](https://openairdocs.org/stc/SR00307DE): Installation of Aft Jump Seat. Air Methods LLC
- [STC SR00308DE](https://openairdocs.org/stc/SR00308DE): Installation of Composite Interior. Air Methods LLC
- [STC SH4343SW-D](https://openairdocs.org/stc/SH4343SW-D): Installation of strobe anti-collision light installation and/or supplemental strobe light. Airbus Helicopters Inc
- [STC SR04644CH](https://openairdocs.org/stc/SR04644CH): Replacement of existing main ship battery with Lithium Ion Battery and installation of Battery System Annunciator. Airwolf Aerospace LLC
- [STC SR12092IB](https://openairdocs.org/stc/SR12092IB): Manufacturing and Installation of Cargo Hold Nets. ICARUS AERO INC
- [STC SR12020IB](https://openairdocs.org/stc/SR12020IB): Installation of External Mirror System 350P025 on Right Hand Side (RHS) and/or Left Hand Side (LHS). BOGGI AERONAUTICS S.R.L
- [STC SH4016SW-D](https://openairdocs.org/stc/SH4016SW-D): Installation of Hourmeter. Airbus Helicopters Inc
- [STC SR00115IB](https://openairdocs.org/stc/SR00115IB): Installation of the Advanced Lithium Ion Battery Replacement of Ni-Cad Battery. Vertical Flight Solutions Inc
- [STC SR04711NY](https://openairdocs.org/stc/SR04711NY): Replacement of Luminator LS400 LED searchlight (steerable landing light). Sterling Helicopter
- [STC SR01410NY](https://openairdocs.org/stc/SR01410NY): Installation of Isolair model 3900-350B2 Spray System. Isolair Inc
- [STC SR02753SE](https://openairdocs.org/stc/SR02753SE): Installation of Isolair Spray System model 3900-H125. Isolair Inc
- [STC SR09090RC-D](https://openairdocs.org/stc/SR09090RC-D): Installation of an Isolair Eliminator II Fire Fighting System. Isolair Inc
- [STC SR04641CH](https://openairdocs.org/stc/SR04641CH): Installation of a Helitak FT1400 Liquid Dispensing System. U.S. Technical Consultants Inc
- [STC SR11839IB](https://openairdocs.org/stc/SR11839IB): Manufacture and Installation of Seat Refurbishment. Icarus Aero Inc
- [STC SR00853DE](https://openairdocs.org/stc/SR00853DE): Installation of Fibrotek survey stinger. Upper Limit Aviation
- [STC SR04548CH](https://openairdocs.org/stc/SR04548CH): Installation of Appareo Systems AIRS-400 Flight Monitoring System. Appareo Systems
- [STC SR00425SE](https://openairdocs.org/stc/SR00425SE): Installation of a satellite phone. Turbolyft USA Corporation
- [STC SR00184IB](https://openairdocs.org/stc/SR00184IB): Installation of External Cargo Basket and Boarding Step. Boost Human External Cargo Systems Inc
- [STC SR00182IB](https://openairdocs.org/stc/SR00182IB): Installation of the Avidyne Integrated Flight Display (IFD) Navigator(s). Horizon Design Services Ltd
- [STC SR02345LA](https://openairdocs.org/stc/SR02345LA): Installation of HeliSAS stability augmentation system and autopilot. S-TEC Corporation
- [STC SR04637CH](https://openairdocs.org/stc/SR04637CH): Replacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control Panel. Airwolf Aerospace LLC
- [STC SR00059DE](https://openairdocs.org/stc/SR00059DE): Installation of infrared imaging system. Dart Aerospace Company
- [STC SR04138NY](https://openairdocs.org/stc/SR04138NY): Installation of Replacement Heater Lines. Boost Human External Cargo Systems Inc

All 417: https://openairdocs.org/aircraft/N312B/stcs.md

## Related

- Other Aerospatiale AS350BA aircraft: https://openairdocs.org/model/aerospatiale-as350ba/aircraft.md
- The Turbomeca ARRIEL-1SER engine: https://openairdocs.org/engine/turbomeca-arriel-1ser.md

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