Rotorcraft · LYCOMING T53-L-11D · as of Sep 21, 2026
Resources Manufacturer · Bell Textron ↗ Engine · Lycoming Engines ↗ Search FAA TCDS ↗
Distribution · currently registered
By state (top 10)
- CA 35.7% 15
- MT 9.5% 4
- AK 7.1% 3
- KS 7.1% 3
- MN 7.1% 3
- IN 2.4% 1
- KY 2.4% 1
- OR 2.4% 1
- NC 2.4% 1
- WA 2.4% 1
+9 more states
By decade of manufacture
- 1960s 52.4% 22
- 2000s 2.4% 1
- Unknown 45.2% 19
NTSB records
13 event(s) on file. Showing the most recent 13.
- Mar 2, 2023 N234SJ Orland, California NTSB docket ↗
- Jun 22, 2022 N98F Amherstdale, West Virginia Fatal NTSB docket ↗
- Jun 21, 2017 N6180A Williams, California NTSB docket ↗
- May 7, 2015 N46969 Kettle Falls, Washington Minor NTSB docket ↗
- Sep 16, 2013 N204UH Detroit, Oregon Fatal NTSB docket ↗
- Sep 6, 2009 N204JB Arvilla, North Dakota Serious NTSB docket ↗
- Dec 5, 2007 N46969 Ennis, Montana NTSB docket ↗
- Oct 16, 2003 N234SJ Durham, California NTSB docket ↗
- Aug 29, 1997 N22753 DAYVILLE, Oregon Serious NTSB docket ↗
- Aug 31, 1994 N204JB CARRABASSET, Maine NTSB docket ↗
- Jan 10, 1985 N99021 SNELLING, California NTSB docket ↗
- Jun 26, 1981 N4237V HEART BUTTE, Montana NTSB docket ↗
- Sep 2, 1980 N99478 PROVO, Utah Fatal NTSB docket ↗
Airworthiness directives
50 directive(s) on file. Showing the most recent 25 · 25 more in the Federal Register.
- Oct 4, 2024
Airworthiness Directives; Bell Textron Inc. Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Bell Textron Inc. (Bell) Model 204B, 205A, 205A-1, 205B, and 210 helicopters. This AD was prompted by an accident and incidents involving failure of the tail boom attachment structure. This AD requires inspecting the tail boom assembly hardware, replacing…
- Sep 26, 2024
Airworthiness Directives; Bell Textron Inc. and Various Restricted Category Helicopters
The FAA is adopting a new airworthiness directive (AD) for Bell Textron Inc. Model 204B, 205A, 205A-1, 205B, 210, and 212 helicopters and various restricted category helicopters with certain part-numbered tension torsion (TT) straps installed by supplemental type certificate (STC) No. SR03408CH. This AD was prompted b…
- May 8, 2024
Airworthiness Directives; Bell Textron Inc., Helicopters
The FAA is revising a notice of proposed rulemaking (NPRM) that would have applied to all Bell Textron Inc., Model 204B, 205A, 205A-1, 205B, and 210 helicopters. This AD was prompted by an accident and incidents involving failure of the tail boom attachment structure. This action revises the NPRM by changing the propo…
- Nov 21, 2022
Airworthiness Directives; Bell Textron Inc., Helicopters and Various Restricted Category Helicopters
The FAA is adopting a new airworthiness directive (AD) for Bell Textron Inc., Model 204B, 205A, 205A-1, 205B, 210, 212, 412, 412CF, and 412EP helicopters and various restricted category helicopters. This AD was prompted by reports of cracks found on the main transmission support case. This AD requires repetitive inspe…
- Nov 7, 2022
Airworthiness Directives; Bell Textron Inc., Erickson 214 Holdings, LLC, Leonardo S.p.a., and Various Restricted Category Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Inc., Model 204B, 205A, 205A-1, 205B, 210, 212, 412, 412CF, and 412EP helicopters; certain Erickson 214 Holdings, LLC, Model 214B and 214B-1 helicopters; certain Leonardo S.p.a. Model AB412 and AB412 EP helicopters; and certain various res…
- Oct 12, 2022
Airworthiness Directives; Bell Textron Inc. Helicopters and Various Restricted Category Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Inc. Model 204B, 205A, and 205A-1 helicopters and various restricted category helicopters. This AD was prompted by a report of cracked main rotor blades (MRBs). This AD requires repetitive inspections of each MRB and removing any cracked M…
- Jun 29, 2022
Airworthiness Directives; Bell Textron Inc. Helicopters and Various Restricted Category Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Inc. Model 204B, 205A, and 205A-1 helicopters and various restricted category helicopters. This proposed AD was prompted by a report of cracked main rotor blades (MRBs). This proposed AD would require repetitive inspections of each M…
- Jun 7, 2022
Airworthiness Directives; Bell Textron Inc. (Type Certificate Previously Held by Bell Helicopter Textron Inc.) Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Bell Textron Inc. (type certificate previously held by Bell Helicopter Textron Inc.), Model 204B, 205A, 205A-1, 205B, and 210 helicopters. This proposed AD was prompted by events involving failure of the tail boom attachment structure. This proposed…
- Apr 14, 2022
Airworthiness Directives; Bell Textron Inc., Helicopters and Various Restricted Category Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for Bell Textron Inc., Model 204B, 205A, 205A-1, 205B, 210, 212, 412, 412CF, and 412EP helicopters and various restricted category helicopters. This proposed AD was prompted by reports of cracks found on the main transmission support case. This proposed AD w…
- Mar 16, 2022
Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
The FAA is adopting a new airworthiness directive (AD) for various model helicopters with certain part-numbered Goodrich externally-mounted hoist assemblies (hoists) installed. This AD was prompted by hoists failing lower load limit inspections. This AD requires replacing unmodified hoists, installing placards, revisi…
- Mar 14, 2022
Airworthiness Directives; Various Restricted Category Helicopters
The FAA is superseding Airworthiness Directive (AD) 2021-15-52 which applied to various restricted category helicopters originally manufactured by Bell Textron Inc. with a certain main rotor hub strap pin (pin) installed. AD 2021-15-52 required removing certain outboard pins from service and prohibited installing them…
- Sep 30, 2021
Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
The FAA is revising a notice of proposed rulemaking (NPRM) for various model helicopters with certain part-numbered Goodrich externally-mounted hoist assemblies (hoists) installed. This action revises the NPRM by adding a figure and revising certain requirements. The FAA is proposing this airworthiness directive (AD)…
- Sep 30, 2021
Airworthiness Directives; Arrow Falcon Exporters, Inc. (Previously Utah State University); California Department of Forestry; Firefly Aviation Helicopter Services (Previously Erickson Air-Crane Co.); Garlick Helicopters, Inc.; Global Helicopter Technology, Inc.; Hagglund Helicopters, LLC (Previously Western International Aviation, Inc.); International Helicopters, Inc.; Precision Helicopters, LLC; Robinson Air Crane, Inc.; San Joaquin Helicopters (Previously Hawkins and Powers Aviation, Inc.); S.M.&T. Aircraft (Previously US Helicopters, Inc., UNC Helicopter, Inc., Southern Aero Corporation, and Wilco Aviation); Smith Helicopters; Southern Helicopter, Inc.; Southwest Florida Aviation International, Inc. (Previously Jamie R. Hill and Southwest Florida Aviation); Tamarack Helicopters, Inc. (Previously Ranger Helicopter Services, Inc.); US Helicopter, Inc. (Previously UNC Helicopter, Inc.); West Coast Fabrication; and Williams Helicopter Corporation (Previously Scott Paper Co.) Model AH-1G, AH-1S, HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P Helicopters; and Southwest Florida Aviation Model UH-1B (SW204 and SW204HP) and UH-1H (SW205) Helicopters
The FAA is withdrawing a notice of proposed rulemaking (NPRM) that proposed to supersede Airworthiness Directive (AD) AD 2002-20-01, which applies to certain Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH- 1E, UH-1F, UH-1H, UH-1L, and UH-1P helicopters; and Southwest Florida Aviation Model SW204, SW204HP, SW205, and SW20…
- Jul 29, 2021
Airworthiness Directives; Various Restricted Category Helicopters
The FAA is adopting a new airworthiness directive (AD) for various restricted category helicopters originally manufactured by Bell Textron Inc. This AD was prompted by a fatal accident in which an outboard main rotor hub strap pin (pin) sheared off during flight, resulting in the main rotor blade and the main rotor he…
- Jul 26, 2021
Airworthiness Directives; Various Restricted Category Helicopters
The FAA is adopting a new airworthiness directive (AD) for various restricted category helicopters, originally manufactured by Bell Textron Inc. (Bell). This AD was prompted by multiple events involving failure of the tail boom attach structure including the bolts. This AD requires revising the existing Rotorcraft Fli…
- Dec 11, 2020
Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
The FAA proposes to adopt a new airworthiness directive (AD) for various model helicopters with certain part-numbered Goodrich externally-mounted hoist assemblies (hoists) installed. This proposed AD would require replacing unmodified hoists, installing placards, revising the existing Rotorcraft Flight Manual (RFM) fo…
- Oct 31, 2019
Airworthiness Directives; Various Experimental and Restricted Category Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for various helicopters operating under experimental airworthiness certificates and various type certificated restricted category helicopters. This proposed AD was prompted by multiple accidents and incidents involving failure of the tail boom attachment str…
- Jan 17, 2018
Airworthiness Directives; Bell Helicopter Textron Helicopters
We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron (Bell) Model 204B, 205A, and 205A-1 helicopters with a Helicopter Technology Company (HTC) main rotor (M/R) blade installed. This AD requires cleaning and visually inspecting the M/R blades, and depending on the outcome of the inspection, r…
- Jan 17, 2018
Airworthiness Directives; Various Restricted Category Helicopters
We are adopting a new airworthiness directive (AD) for Model TH-1F, UH-1B, UH-1F, UH-1H, and UH-1P helicopters with a Helicopter Technology Company (HTC) main rotor (M/R) blade installed. This AD requires cleaning and visually inspecting the M/R blades and, depending on the outcome of the inspection, repairing or repl…
- Nov 22, 2016
Airworthiness Directives; Various Restricted Category Helicopters
We are adopting a new airworthiness directive (AD) for various restricted category helicopters. This AD requires cleaning and visually inspecting certain main rotor (M/R) blades and, depending on the outcome of the inspections, repairing or replacing the M/R blades. This AD was prompted by a report of an M/R blade wit…
- Apr 11, 2016
Airworthiness Directives; Various Restricted Category Helicopters
We propose to adopt a new airworthiness directive (AD) for various restricted category helicopters. This proposed AD would require cleaning and visually inspecting certain main rotor (M/R) blades and, depending on the outcome of the inspections, repairing or replacing the M/R blades. This proposed AD is prompted by a…
- Feb 19, 2014
Airworthiness Directives; Various Restricted Category Helicopters
We are adopting a new airworthiness directive (AD) for various restricted category helicopters, originally manufactured by Bell Helicopter Textron, Inc. (Bell), model numbers HH-1K, TH-1F, TH-1L, UH- 1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P. This AD requires inspecting the tail rotor (T/R) cable assembly for a…
- Aug 20, 2013
Airworthiness Directives; Various Restricted Category Helicopters
We propose to adopt a new airworthiness directive (AD) for various restricted category helicopters, originally manufactured by Bell Helicopter Textron, Inc. (Bell), model numbers HH-1K, TH-1F, TH- 1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P. The current type certificate holders include but are not limited…
- Aug 6, 2013
Airworthiness Directives; Various Restricted Category Helicopters
We are adopting a new airworthiness directive (AD) for Arrow Falcon Exporters, Inc. (previously Utah State University); Firefly Aviation Helicopter Services (previously Erickson Air-Crane Co.); California Department of Forestry; Garlick Helicopters, Inc.; Global Helicopter Technology, Inc.; Hagglund Helicopters, LLC (…
- Jul 9, 2013
Airworthiness Directives; Various Restricted Category Helicopters
We are adopting a new airworthiness directive (AD) for various restricted category Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH- 1F, UH-1H, UH-1L, and UH-1P helicopters with certain main rotor hub inboard strap fittings (fittings) installed. This AD requires a magnetic particle inspection (MPI) of the fittings f…
Supplemental type certificates · 66 on file
- 04/14/2023 STC SH3319NM Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, Precise Flight Inc DRS ↗
- 02/08/2023 STC SR00119DE Installation of an upgraded 42 degree Tail Rotor gearbox, P/N 212-040-003, and Control Cables Midwest Aerospace TC LLC DRS ↗
- 02/08/2023 STC SR09177RC Modification of the vertical fin spar Midwest Aerospace TC LLC DRS ↗
- 02/05/2022 STC SH5690NM Installation of Advanced Technology Aircraft Co. engine barrier filter. WSH LLC DRS ↗
- 10/07/2020 STC SR02492LA Installation of a Helicopter Technology Company main rotor blade assembly Helicopter Technology Co DRS ↗
- 05/19/2020 STC SH3319NM (1 OF 2) Installation of Precise Flight Pulselite Control Unit in the\nLanding /Taxi Recognition Visual Control Light system, Precise Flight Inc DRS ↗
- 10/03/2017 STC SR03408CH Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101-101 or AA-204-310-101-103 Airwolf Aerospace LLC DRS ↗
- 07/24/2017 STC SR02413LA Installation of an AKV, Inc Exceedence and Trend Monitoring System kit P/N ETM1000 AKV Inc. DRS ↗
- 05/10/2017 STC SR03408CH Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101-101 or AA-204-310-101-103 Airwolf Aerospace LLC DRS ↗
- 12/29/2016 STC SH3319NM Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, Precise Flight Inc DRS ↗
- 12/14/2016 STC SR02413LA Installation of an AKV, Inc Exceedence and Trend Monitoring System kit P/N ETM1000 AKV Inc. DRS ↗
- 07/07/2016 STC ST04270AT Install the VTOL ASSALT V3 Windscreen Laminate Kit VTOL LLC DRS ↗
- 04/28/2016 STC SR03408CH Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101-101 or AA-204-310-101-103 Airwolf Aerospace LLC DRS ↗
- 03/17/2016 STC SR02413LA Installation of an AKV, Inc Exceedence and Trend Monitoring System kit P/N ETM1000 AKV Inc. DRS ↗
- 03/07/2016 STC SR00767SE Fabrication of Helipro spar replacement system Vector Aerospace Helicopter Services USA Inc. DRS ↗
- 02/04/2016 STC SR00767SE Fabrication and installation of Helipro spar replacement system Acrohelipro Global Services USA Inc. DRS ↗
- 12/11/2015 STC SR02413LA Installation of an AKV, Inc Exceedence and Trend Monitoring System kit P/N ETM1000 AKV Inc. DRS ↗
- 10/08/2015 STC SR02492LA Installation of a Helicopter Technology Company main rotor blade assembly Helicopter Technology Co DRS ↗
- 01/26/2015 STC SR03408CH Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101-101 or AA-204-310-101-103 Airwolf Aerospace LLC DRS ↗
- 01/14/2015 STC SR02394AK Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system Seaplanes North LLC DRS ↗
- 12/10/2014 STC SR03408CH Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101 or AA-204-310-103 Airwolf Aerospace LLC DRS ↗
- 06/09/2014 STC SH3319NM Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, Precise Flight Inc DRS ↗
- 11/04/2013 STC SR01742NY Installation of extended height landing gear. Dart Aerospace Limited DRS ↗
- 07/25/2013 STC SH3319NM Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, Precise Flight Inc DRS ↗
- 10/17/2012 STC SH3319NM Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system, Precise Flight Inc DRS ↗
- 05/23/2012 STC SR02394AK Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system Floats Alaska LLC DRS ↗
- 03/15/2012 STC SR02394AK Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system per Installation Instructions LED03-20R, Rev. IR, dated October 27, 2010. Floats Alaska LLC DRS ↗
- 02/21/2012 STC SH3319NM Installation of Precise Pulselite Control System Precise Flight Inc DRS ↗
- 01/26/2012 STC SR00119DE Installation of an upgraded 42 degree tail rotor gearbox, P/N 212-040-003, and control cables. Rotorcraft Development Corporation DRS ↗
- 12/05/2011 STC SH5690NM Installation of Advanced Technology Aircraft Co. engine barrier filter. Waukena Flying Services Inc. DRS ↗
+ 36 more STCs on file
Advisory circulars & Federal Register
Advisory circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register · Parts 91 & 43
- 2026-09-14 Use of Certain Restricted Category Aircraft for the Transport of Firefighters for Wildfire Suppression FR ↗
- 2026-07-31 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
- 2026-07-02 Enabling Supersonic Overland Flight FR ↗
- 2026-07-01 Mechanic Certification: Inspection Rating and Recent Experience Requirements FR ↗
- 2026-06-30 Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period FR ↗
Registered N-numbers · 42
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N1022Q | IN | 1964 | · | Look up ↗ |
| N102FW | KY | — | · | Look up ↗ |
| N11NE | CA | 2001 | · | Look up ↗ |
| N1MX | AK | — | · | Look up ↗ |
| N204BS | OR | — | · | Look up ↗ |
| N204DS | NC | 1960 | · | Look up ↗ |
| N204DX | MT | — | · | Look up ↗ |
| N204JB | CA | 1963 | ● | Look up ↗ |
| N204UH | MT | 1962 | ● | Look up ↗ |
| N206NJ | WA | 1962 | · | Look up ↗ |
| N22753 | CA | 1964 | ● | Look up ↗ |
| N234SJ | CA | 1962 | ● | Look up ↗ |
| N2956F | CA | — | · | Look up ↗ |
| N370AS | AZ | — | · | Look up ↗ |
| N405PD | TX | — | · | Look up ↗ |
| N4237V | AK | — | ● | Look up ↗ |
| N424NA | CA | — | · | Look up ↗ |
| N444SJ | CA | 1962 | · | Look up ↗ |
| N4480 | CA | — | · | Look up ↗ |
| N45731 | KS | — | · | Look up ↗ |
| N45855 | MN | — | · | Look up ↗ |
| N46928 | MN | — | · | Look up ↗ |
| N46969 | MT | — | ● | Look up ↗ |
| N5073X | CA | 1963 | · | Look up ↗ |
| N59HP | CA | 1962 | · | Look up ↗ |
| N600MA | CA | 1964 | · | Look up ↗ |
| N606HF | FL | — | · | Look up ↗ |
| N6180A | CA | 1962 | ● | Look up ↗ |
| N62767 | MT | — | · | Look up ↗ |
| N64770 | CA | 1964 | · | Look up ↗ |
| N8043Z | KS | — | · | Look up ↗ |
| N806SB | MN | 1964 | · | Look up ↗ |
| N832M | WY | 1963 | · | Look up ↗ |
| N841M | OK | 1962 | · | Look up ↗ |
| N88976 | NV | — | · | Look up ↗ |
| N893PM | CA | 1962 | · | Look up ↗ |
| N91320 | CA | 1962 | · | Look up ↗ |
| N9434A | PA | — | · | Look up ↗ |
| N98F | WV | 1962 | ● | Look up ↗ |
| N99021 | KS | 1965 | ● | Look up ↗ |
| N99478 | DE | 1963 | ● | Look up ↗ |
| N99675 | AK | 1963 | · | Look up ↗ |
Source — FAA Aircraft Registry
Sources
- FAA Aircraft Registry ↗ Refreshed Apr 27, 2026 Available
- NTSB CAROL ↗ Refreshed Jun 10, 2026 Available
- Federal Register (FAA Airworthiness Directives) ↗ Refreshed Apr 27, 2026 Available