# N725HT: 1984 Bell 214ST

- Status: Valid registration
- Airframe: [Bell 214ST](https://openairdocs.org/model/bell-214st) (registry code 1182106, 18 seats)
- Engine: [GE CT7 series](https://openairdocs.org/engine/ge-ct7-series) (registry code 30030)
- Data sheets: [TCDS H10SW](https://openairdocs.org/tcds/H10SW) (McDermott 214 Holdings, LLC) (OpenAirDocs)
- Serial number: 28128
- Year built: 1984
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Multiple
- Airworthiness date: July 12, 2024
- Certificate issued: July 2, 2024
- Expires: July 31, 2031
- Mode S code: A9B6E0
- Registered owner: [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE)
- Location: [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- Owner type: Corporation
- Owner's area on the map: 40.7558° N, 111.8843° W: Placed by OpenAirDocs at the center of ZIP code 84111, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=725HT
- Page: https://openairdocs.org/aircraft/N725HT

From the FAA registry file of October 22, 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. The registry lists only the engine series, so ADs for every GE CT7 model are included.

## ADs that may apply (OpenAirDocs): 48 in force

### Matched by airframe (Bell 214ST)

- [AD 2020-14-01](https://openairdocs.org/ad/2020-14-01): Main Rotor · Bell Textron 214ST. Effective Aug 11, 2020
- [AD 2014-12-01](https://openairdocs.org/ad/2014-12-01): Tail Rotor Drive Bearing · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Jul 14, 2014
- [AD 2013-19-05](https://openairdocs.org/ad/2013-19-05): JASC Code: 6330, Transmission Mount · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Nov 5, 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 99-04-13](https://openairdocs.org/ad/99-04-13): Tail Rotor Yoke · Bell Helicopter Textron 214ST. Effective Mar 4, 1999
- [AD 98-23-18](https://openairdocs.org/ad/98-23-18): Kaynar Tech. Manufactured Barrel Nut · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Nov 30, 1998
- [AD 98-18-01](https://openairdocs.org/ad/98-18-01): Main Rotor Trunnion · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Sep 29, 1998
- [AD 97-19-09](https://openairdocs.org/ad/97-19-09): Bearing Bolts · Bell Helicopter Textron 214ST. Effective Oct 16, 1997
- [AD 97-17-06](https://openairdocs.org/ad/97-17-06): Solenoid Valve Assemblies · Bell Helicopter Textron 214ST. Effective Sep 24, 1997
- [AD 97-15-04](https://openairdocs.org/ad/97-15-04): Main Transmission Upper Planetary Carrier · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Aug 19, 1997
- [AD 97-06-03](https://openairdocs.org/ad/97-06-03): Fatigue Failure Of The Mast · Bell Helicopter Textron 214ST. Effective Apr 16, 1997
- [AD 97-06-02](https://openairdocs.org/ad/97-06-02): Lower Planetary Spider · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Apr 16, 1997
- [AD 96-07-12](https://openairdocs.org/ad/96-07-12): Tailboom Assembly For Cracks  Inspection · Bell Helicopter Textron 214ST. Effective May 10, 1996
- [AD 88-12-03](https://openairdocs.org/ad/88-12-03): Main Rotor Drag Brace Assembly · Bell Helicopter Textron 214ST. Effective Apr 9, 1990
- [AD 88-09-01](https://openairdocs.org/ad/88-09-01): Tail Rotor Gearbox · Bell Helicopter Textron 214ST. Effective Apr 22, 1988
- [AD 87-11-06](https://openairdocs.org/ad/87-11-06): Locking Plates · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective May 26, 1987
- [AD 85-18-06](https://openairdocs.org/ad/85-18-06): Main Rotor Drag Brae Assembly · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Apr 20, 1987
- [AD 86-20-06](https://openairdocs.org/ad/86-20-06): Main Rotor Drag Brace Assembly · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Oct 18, 1986
- [AD 86-12-06](https://openairdocs.org/ad/86-12-06): Main Rotor Yoke Assemblies · Bell Helicopter Textron 214ST. Effective Jul 1, 1986
- [AD 82-26-07 R1](https://openairdocs.org/ad/82-26-07-R1): Tailboom Separation · Bell Helicopter Textron 214ST. Effective Aug 17, 1984
- [AD 84-15-05](https://openairdocs.org/ad/84-15-05): Collective Lever Assembly · Bell Helicopter Textron 214ST. Effective Aug 3, 1984
- [AD 82-06-07](https://openairdocs.org/ad/82-06-07): Tail Rotor Yoke · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Apr 12, 1982
- [AD 81-12-03](https://openairdocs.org/ad/81-12-03): Spindle Retention Bolts · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Jun 11, 1981
- [AD T84-18-51](https://openairdocs.org/ad/T84-18-51): Main Rotor Spindles · Bell Helicopter Textron 214ST
- [AD 86-12-01 L](https://openairdocs.org/ad/86-12-01-L): Locking Plate · Bell Helicopter Textron 214ST
- [AD 85-23-05](https://openairdocs.org/ad/85-23-05): Collective Sleeve · Bell Helicopter Textron 214B, 214B-1 and 214ST
- [AD 84-05-51](https://openairdocs.org/ad/84-05-51): Collective Sleeves · Bell Helicopter Textron 214B, 214B-1 and 214ST

### Matched by engine (GE CT7 series)

- [AD 2025-05-15](https://openairdocs.org/ad/2025-05-15): Engine (Turbine/Turboprop) · General Electric Company GE CT7-2E1. Effective Apr 17, 2025
- [AD 2025-05-02](https://openairdocs.org/ad/2025-05-02): Engine (Turbine/Turboprop) · General Electric CT7-5A2, CT7-5A3, CT7-7A and 8 more. Effective Apr 8, 2025
- [AD 2024-06-51](https://openairdocs.org/ad/2024-06-51): Engine (Turbine/Turboprop); Turbine Section · General Electric CT7-2E1, CT7-2F1, CT7-8A and 2 more. Effective Apr 23, 2024
- [AD 2023-21-07](https://openairdocs.org/ad/2023-21-07): Turbine Engine Reduction Gear · General Electric CT7-5A2, CT7-5A3, CT7-7A and 6 more. Effective Dec 11, 2023
- [AD 2022-18-16](https://openairdocs.org/ad/2022-18-16): Turbine Engine Combustion Section, Turbine Section · General Electric CT7-8A. Effective Oct 7, 2022
- [AD 2017-19-20](https://openairdocs.org/ad/2017-19-20): Turbine Engine Compressor Section · General Electric CT7-8A and CT7-9B. Effective Oct 27, 2017
- [AD 2011-21-17](https://openairdocs.org/ad/2011-21-17): Fuel filter differential pressure switch. · General Electric CT7-8A, CT7-8A1, CT7-8E and 1 more. Effective Nov 17, 2011
- [AD 2011-19-03](https://openairdocs.org/ad/2011-19-03): Accessory gearbox (AGB) · General Electric CT7-8, CT7-8A, CT7-8A1 and 2 more. Effective Nov 9, 2011
- [AD 2010-23-20](https://openairdocs.org/ad/2010-23-20): Gas generator turbine (GGT) shafts · General Electric CT7-9C and CT7-9C3. Effective Dec 22, 2010
- [AD 2008-26-02](https://openairdocs.org/ad/2008-26-02): Electrical chip detectors · General Electric CT7-8A. Effective Jan 26, 2009
- [AD 2007-08-01](https://openairdocs.org/ad/2007-08-01): Eddy current inspection (ECI) of boltholes · General Electric CT7-5A2, CT7-5A3, CT7-7A and 8 more. Effective May 14, 2007
- [AD 2004-16-07](https://openairdocs.org/ad/2004-16-07): Turbine Stage 2 Aft Cooling Plates · General Electric CT7-2D1. Effective Aug 23, 2004
- [AD 2004-07-09](https://openairdocs.org/ad/2004-07-09): PGB oil filter impending bypass button (IBB) · General Electric CT7-2A, CT7-2D, CT7-2D1 and 14 more. Effective May 11, 2004
- [AD 2003-08-52](https://openairdocs.org/ad/2003-08-52): Compressor variable geometry (VG) · General Electric CT7-9B. Effective Jun 2, 2003
- [AD 2002-01-03](https://openairdocs.org/ad/2002-01-03): Stage 2 Turbine Aft Cooling Plates · General Electric CT7-5A2, CT7-5A3, CT7-7A and 1 more. Effective Feb 12, 2002
- [AD 97-25-07](https://openairdocs.org/ad/97-25-07): Stage 1 or 2 Gas Generator Turbine (GGT) Disk · General Electric CT7-5A2, CT7-7A, CT7-9B and 1 more. Effective Jan 28, 1998
- [AD 96-26-01](https://openairdocs.org/ad/96-26-01): GGT Stage 2 Forward Cooling Plate · General Electric CT7-5A2, CT7-7A, CT7-9B and 1 more. Effective Mar 10, 1997
- [AD 94-17-16](https://openairdocs.org/ad/94-17-16): Propeller Gearboxes · General Electric CT7-5A2, CT7-5A3, CT7-7A and 6 more. Effective Sep 15, 1994
- [AD 93-25-17](https://openairdocs.org/ad/93-25-17): Gas Generator Turbine (GGT) Disks and Cooling Plates · General Electric CT7-2A, CT7-5A2, CT7-6 and 2 more. Effective Feb 2, 1994
- [AD 93-23-05](https://openairdocs.org/ad/93-23-05): Gas Generator Turbine (GGT) Rotor Assembly Parts and Power Turbine (PT) Disks · General Electric CT7-5A2 and CT7-7A. Effective Jan 10, 1994
- [AD 88-07-08](https://openairdocs.org/ad/88-07-08): Power Turbine Overspeed · General Electric CT7-5A2. Effective May 9, 1988

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

- [AD 2013-11-05](https://openairdocs.org/ad/2013-11-05) (historical): Tail rotor hanger bearing · Bell Helicopter Textron 214B, 214B-1 and 214ST. Effective Jun 19, 2013
- [AD 2024-05-51](https://openairdocs.org/ad/2024-05-51) (historical): Turbine Section · General Electric CT7-2E1, CT7-2F1, CT7-8A and 11 more. Effective Apr 1, 2024
- [AD 2018-03-13](https://openairdocs.org/ad/2018-03-13) (historical): Turbine Engine Reduction Gear · General Electric CT7-5A2, CT7-5A3, CT7-7A and 6 more. Effective Feb 28, 2018
- [AD 2006-06-51](https://openairdocs.org/ad/2006-06-51) (historical): Electrical chip detectors for the No. 3 bearing · General Electric CT7-8A. Effective May 2, 2006
- [AD 2005-18-01](https://openairdocs.org/ad/2005-18-01) (historical): Turbine aft cooling plate boltholes · General Electric Aircraft Engines CT7-5A2, CT7-5A3, CT7-7A and 4 more. Effective Oct 24, 2005
- [AD 2003-06-03](https://openairdocs.org/ad/2003-06-03) (historical): Propeller gearbox (PGB) oil filter · General Electric Aircraft Engines CT7-2A, CT7-2D, CT7-2D1 and 14 more. Effective Apr 24, 2003

## Information bulletins (advisory) (1 in force)

- [SAIB ANE-98-31](https://openairdocs.org/saib/ANE-98-31): . Issued May 15, 1998

## NTSB investigations

None matched to N725HT.

## FAA accident and incident reports

None matched to N725HT.

## 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) (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 (Bell 214ST)

- [STC SR02270SE](https://openairdocs.org/stc/SR02270SE): Fabrication and installation of Geneva Aviation Audio System. AEM USA Inc
- [STC SR02444SE](https://openairdocs.org/stc/SR02444SE): Installation of P178 Failsafe Audio Mixer. AEM USA Inc
- [STC SR11862IB](https://openairdocs.org/stc/SR11862IB): Manufacture of High Skid Landing Gear. McDermott Aviation Ltd
- [STC SR04584CH](https://openairdocs.org/stc/SR04584CH): Installation of Helitak FT3500 Liquid Dispensing System. McDermott Aviation 214 Holdings LLC
- [STC SR00213IB](https://openairdocs.org/stc/SR00213IB): Modification of Swashplate Inner Ring Assembly. McDermott Aviation Ltd
- [STC SR00064MC](https://openairdocs.org/stc/SR00064MC): Installation of a Ballistic Protection System (BPS). Erickson Incorporated
- [STC SR00176IB](https://openairdocs.org/stc/SR00176IB): Modification 2-Person and 5-Person Seats. McDermott Aviation Ltd
- [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc
- [STC SR02590SE](https://openairdocs.org/stc/SR02590SE): Installation of a Light Emitting Diode (LED) Annunciator Panel. Luma Technologies LLC
- [STC SR04772NY](https://openairdocs.org/stc/SR04772NY): Manufacturing and Installation of Legacy Helicopter Maintenance (LHM) Improved Transmission Spindle. Legacy Helicopter Maintenance Ltd
- [STC SR04654NY](https://openairdocs.org/stc/SR04654NY): Installation of the Astronics (Max-Viz) 1400 EVS. Avio Design Group Inc
- [STC SR02078SE](https://openairdocs.org/stc/SR02078SE): Installation and Maintenance of the Lifeport Patient Litter System TLSS CASEVAC. Erickson Helicopters Inc
- [STC SR04403NY](https://openairdocs.org/stc/SR04403NY): Installation of the Trig Avionics TT22 ADS-B Transponder System. Maxcraft Avionics Ltd
- [STC SR04404NY](https://openairdocs.org/stc/SR04404NY): Installation of the Trig Avionics TY92 VHF Communications System. Maxcraft Avionics Ltd
- [STC SR03979AT](https://openairdocs.org/stc/SR03979AT): Deactivation of the Fly By Wire Elevator in a Bell 2 l 4ST Rotorcraft and associated hardware. Erickson Incorporated
- [STC SR04358NY](https://openairdocs.org/stc/SR04358NY): Installation of Cargo Hook Modification. Legacy Helicopter Maintenance Ltd
- [STC SR00907DE](https://openairdocs.org/stc/SR00907DE): Installation of modified engine starters. Erickson Incorporated
- [STC SH7719SW](https://openairdocs.org/stc/SH7719SW): Installation of external hoist (Breeze). Erickson Helicopters Inc
- [STC SH5848SW](https://openairdocs.org/stc/SH5848SW): Installation of a quick change interior. Associated Air Center, Inc. - c/o CT Corporation System
- [STC SH3604SW](https://openairdocs.org/stc/SH3604SW): Installation of executive interior. RSG Products
- [STC SH3758SW](https://openairdocs.org/stc/SH3758SW): Installation of V.I.P. RSG Products
- [STC SH7578SW](https://openairdocs.org/stc/SH7578SW): Installation of a VIP cabin interior. RSG Products
- [STC SH7720SW](https://openairdocs.org/stc/SH7720SW): Installation of dual Honeywell(Sperry) Electronic Flight Instrument System. RSG Products
- [STC SH7721SW](https://openairdocs.org/stc/SH7721SW): Installation of a Right Hand Baggage Compartment Modification. RSG Products
- [STC SR02407SE](https://openairdocs.org/stc/SR02407SE): Installation of Geneva Aviation 28 - 14 VDC Power Converter. AEM USA Inc
- [STC SR03659NY](https://openairdocs.org/stc/SR03659NY): Installation of NAT AMS43 TSO Audio System. Maxcraft Avionics Ltd
- [STC SR03371CH](https://openairdocs.org/stc/SR03371CH): Installation of NASI Supplemental Air Conditioning Module. National Aircraft Service Inc
- [STC SR01407SE](https://openairdocs.org/stc/SR01407SE): Fabrication of Helicopter Transport Services, Inc Left Seat Pilot in Command, External Instrument Box and Bubble Window. Helicopter Transport Services LLC
- [STC SR03339NY](https://openairdocs.org/stc/SR03339NY): Installation of Latitude Technologies IONODE Flight Data Monitoring System. Latitude Technologies Corporation
- [STC SR02843NY](https://openairdocs.org/stc/SR02843NY): Installation of Sliding Door Pop Out Windows. Alpine Aerotech LP
- [STC SR00068MC](https://openairdocs.org/stc/SR00068MC): Installation of Night Vision Imaging System (NVIS) compatible cockpit lighting. Aerospace Vendor Solutions Inc
- [STC SH3724SW](https://openairdocs.org/stc/SH3724SW): Wedge window installation to be used as an emergency exit. Bell Helicopter Textron Inc
- [STC SR00180AT](https://openairdocs.org/stc/SR00180AT): Installation of replacement door handle. Bell Helicopter Textron Inc
- [STC SR02027AT](https://openairdocs.org/stc/SR02027AT): Manufacture of Replacement Crew Door Window Assembly in accordance with Aeronautical Accessories, Inc. Drawing List Report No. AA-99027, no revision, dated March 23, 1999, or later FAA approved revision, and installation per Report No. AA-99029, no revision, dated March 18, 1999, or later FAA approved revision. Bell Helicopter Textron Inc
- [STC SH3723NM](https://openairdocs.org/stc/SH3723NM): Installation of closed circuit refueling receiver P/N 750000-5. AeroControlex Group Inc
- [STC SR09207RC](https://openairdocs.org/stc/SR09207RC): Installation of a couch. Texas Aviation Services
- [STC SR09409RC](https://openairdocs.org/stc/SR09409RC): Installation of a Environmental Control Unit. Texas Aviation Services
- [STC SR02044SE](https://openairdocs.org/stc/SR02044SE): Installation of a Supplemental Lighting System; manufactured and installed. Aviation Specialties Unlimited Inc
- [STC SH464NW](https://openairdocs.org/stc/SH464NW): Incorporation of a weighing system for external load operations. Measurement Systems Intl Inc
- [STC SR01592SE](https://openairdocs.org/stc/SR01592SE): Installation and Maintenance of Goodrich Internal Rescue Hoist. Heli-Trade Corp
- [STC SR09339RC](https://openairdocs.org/stc/SR09339RC): Installation of emergency medical systems (EMS). Petroleum Helicopters Inc
- [STC SR09328RC](https://openairdocs.org/stc/SR09328RC): Installation of Air Methods articulating patient loading system (APLS). Petroleum Helicopters Inc
- [STC SR09226RC](https://openairdocs.org/stc/SR09226RC): Installation of Emergency medical systems (EMS). Petroleum Helicopters Inc
- [STC SR09225RC](https://openairdocs.org/stc/SR09225RC): Installation of Concorde RG214 valve regulated sealed lead acid battery. Falcon Crest Aviation Supply Inc
- [STC SR09191RC](https://openairdocs.org/stc/SR09191RC): Installation of a B&D cockpit voice recorder. Air Logistics
- [STC SR02061AK](https://openairdocs.org/stc/SR02061AK): Installation of a Spectrolab SX-16C 'Nightsun' Searchlight and related components. North Slope Borough Search and Rescue
- [STC SR02062AK](https://openairdocs.org/stc/SR02062AK): Installation of a FLIR Systesms, Inc. AN/AAQ-22 SAFIRE Thermal Imaging System. North Slope Borough Search and Rescue
- [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International
- [STC SH7585SW](https://openairdocs.org/stc/SH7585SW): Personnel lifting device. Billy Pugh Company, Inc
- [STC SH4331NM](https://openairdocs.org/stc/SH4331NM): Installing a Model 7700 Modular Electrical System. Simplex Manufacturing Company

## Related

- Other Bell 214ST aircraft: https://openairdocs.org/model/bell-214st/aircraft.md
- The GE CT7 series engine: https://openairdocs.org/engine/ge-ct7-series.md

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