EASA Regulations for Bell 206

16 airworthiness directives and regulations affecting Bell 206.

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New ADs and bulletins for Bell 206, summarized like the ones below, every Monday.

EASA SIB CASA-2025-09

Jul 14, 2025

Pilot Cyclic Stick Tube Cracking

Transport Canada Civil Aviation Safety Alert CASA 2025-09 is a safety alert addressing pilot cyclic stick tube cracking on Bell Textron Canada Limited model 206, 407, and 427 helicopters. The alert highlights reports of fatigue cracks in the pilot cyclic stick tube, particularly part number 206-001-342-101, with a focus on the Bell 407 model where excessive force during control checks causes stress fractures. The document informs operators and maintainers about the issue and references Bell Alert Service Bulletins for inspection and corrective actions.

Safety Information Bulletin
  • Bell 206
  • Bell 427

EASA AD US-2024-20-07

Nov 29, 2024

Equipment / Furnishings - Emergency Float Kit Activation Handle - Repetitive Inspections / Replacement

The document titled 'Equipment / Furnishings - Emergency Float Kit Activation Handle - Repetitive Inspections / Replacement' is a regulatory directive addressing the maintenance requirements for the emergency float kit activation handle on certain aircraft. It mandates repetitive inspections and replacement procedures to ensure the proper functioning of this critical safety equipment. The directive applies to aircraft equipped with the specified emergency float kit activation handle assemblies.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters EC 120 B
  • Airbus Helicopters BO 105
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters MBB-BK 117
  • Bell 206
  • Bell 407
  • Bell Textron Inc. (Bti) 210
  • Bell Textron Inc. (Bti) 212
  • Bell Textron Inc. (Bti) 412
  • Leonardo S.P.A. Helicopters AB212
  • Leonardo S.P.A. Helicopters AB412
  • Md Helicopters Inc (Mdhi) 369
  • Md Helicopters Inc (Mdhi) 500N
  • Robinson R44 (Raven)
  • Robinson R66
  • Sikorsky S-76

EASA AD CF-2022-33

Jun 22, 2022

Tail Rotor Drive — Failure of Tail Rotor Drive Shaft with Bonded Adapters

The Canadian Airworthiness Directive CF-2022-33 addresses the failure risk of tail rotor drive shafts with bonded adapters on Bell Textron Canada Limited model 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. It mandates inspections and proof load tests to detect adhesive bond degradation in segmented tail rotor drive shaft assemblies. This directive aims to prevent loss of tail rotor drive and potential loss of helicopter control.

Airworthiness Directive
  • Bell 206
  • Bell Textron Canada Limited 206A1
  • Bell Textron Canada Limited 206B1
  • Bell Textron Canada Limited 206L134

EASA AD US-2021-24-15

Dec 16, 2021

Tail Rotor Drive - Oil Cooler Blower Shaft Drive Ring Spline Teeth and Mating Area Spline Teeth - Inspection

Federal Register Volume 86, Number 237, Final Rule FAA Airworthiness Directive 2021-24-15 addresses Bell Textron Canada Limited Model 206L-1, 206L-3, and 206L-4 helicopters equipped with certain Air Comm Corporation air conditioning systems. This directive mandates inspection of the oil cooler blower shaft's drive ring spline teeth and mating spline teeth for deformation and fretting. It targets helicopters with specific Supplemental Type Certificate (STC) air conditioning system part numbers installed.

Airworthiness Directive
  • Air Comm Corporation CAA UK AAN 25273
  • Bell 206
  • Bell Textron Canada 206L-1
  • Bell Textron Canada 206L-3
  • Bell Textron Canada 206L-4

EASA AD CF-2020-15

May 14, 2020

Tail Rotor Drive — Failure of Tail Rotor Drive Shaft Coupling Bolted Connections

Canadian Airworthiness Directive CF-2020-15 addresses the failure risk of tail rotor drive shaft coupling bolted connections on Bell Textron Canada Limited model 206 series helicopters, including 206, 206A, 206B, and 206L variants. The directive mandates replacement of certain MS21042-series nuts with more reliable NAS9926-series nuts or alternate parts to prevent loss of tail rotor drive and potential loss of helicopter control. It also covers specific configurations affected by Supplemental Type Certificates SH2750NM and SH99-202 and provides tailored corrective actions for different helicopter groups.

Airworthiness Directive
  • Air Comm Corporation CAA UK AAN 25273
  • Bell 206
  • Bell 206A
  • Bell 206B
  • Bell 206L

EASA AD CF-2019-34

Sep 27, 2019

Superseded by CANADIAN AD CF-2020-15

Canadian Airworthiness Directive CF-2019-34 addresses the failure risk of bolted fittings in the tail rotor drive shaft couplings on Bell Helicopter Textron Canada Limited models 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4. The directive mandates replacing MS21042 series nuts with NAS9926 series nuts to prevent potential tail rotor drive loss. This AD aims to enhance flight safety by mitigating the risk of tail rotor control failure due to nut cracking or loss.

Airworthiness Directive
  • Bell 206
  • Bell Helicopter Textron Canada Limited 206
  • Bell Helicopter Textron Canada Limited 206A1
  • Bell Helicopter Textron Canada Limited 206B1
  • Bell Helicopter Textron Canada Limited 206L134

EASA AD CF-2016-13R1

Sep 13, 2019

Main Rotor Drive — Loss of Lubrication to the Freewheel Assembly

The Canadian Airworthiness Directive CF-2016-13R1 titled 'Main Rotor Drive — Loss of Lubrication to the Freewheel Assembly' applies to Bell Helicopter Textron Canada Limited models 206A, 206B, 206L series, and 407 helicopters. It addresses the risk of main rotor mast failure caused by blocked oil restrictors in the freewheel lubrication circuit, which can lead to loss of helicopter control. The directive mandates inspections, cleaning, and possible replacement of components to ensure proper lubrication flow.

Airworthiness Directive
  • Bell 206
  • Bell 407
  • Bell Helicopter Textron Canada 206A
  • Bell Helicopter Textron Canada 206B
  • Bell Helicopter Textron Canada 206L series
  • Bell Helicopter Textron Canada 407

EASA AD CF-2019-01

Jan 10, 2019

Standard Practices — Helicopter External Transport System (HETS—¢) - Unapproved Parts, Inadequate Service Life Limits and Maintenance Requirements

Airworthiness Directive CF-2019-01 is a Canadian regulatory document addressing the Helicopter External Transport System (HETS™) certified under Transport Canada Supplemental Type Certificate SH98-35 installed on specific helicopter models including Bell 206B, 206L series, 407, Airbus Helicopters AS350 and AS355 series, and MD Helicopter 369 and 500N series. The directive focuses on issues related to unapproved parts, inadequate service life limits, and maintenance requirements for HETS™ components. It mandates inspections, component removals, and flight manual amendments to ensure continued airworthiness and safety.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355
  • Bell 206
  • Bell 407
  • Md Helicopters Inc (Mdhi) 369
  • Md Helicopters Inc (Mdhi) 500N
  • Bell 206B
  • Bell 206L
  • Airbus Helicopters AS350
  • Airbus Helicopters AS355
  • MD Helicopter 369
  • MD Helicopter 500N

EASA AD US-2018-25-17

Jan 7, 2019

Air Conditioning - Electrical Connectors - Replacement

Airworthiness Directive 2018-25-17 is a final rule issued by the FAA addressing Air Comm Corporation air conditioning systems installed on various Airbus Helicopters models including AS350 series and EC130B4, as well as Bell 206 and 407 series helicopters. The directive mandates the replacement of certain electrical connectors in these air conditioning systems to prevent overheating. It applies to specific Air Comm part numbers installed on these helicopters.

Airworthiness Directive
  • Air Comm Corporation CAA UK AAN 25273
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Bell 206
  • Bell 407
  • Airbus Helicopters AS350
  • Airbus Helicopters EC130B4

EASA AD CF-2018-23

Aug 27, 2018

Engine Turbine/Turboshaft — RPM (N2) Steady-State Operation Avoidance Range Limit

The Airworthiness Directive CF-2018-23 issued by Transport Canada mandates updated operating limitations for the engine turbine/turboshaft RPM (N2) steady-state operation avoidance range on Bell Helicopter Textron Canada Limited (BHTCL) model 206B and 206L series helicopters. This directive addresses issues related to Rolls Royce 250-C20 Series engine turbine wheel failures by expanding the RPM avoidance range and requiring amendments to the Rotorcraft Flight Manual and installation of a new decal. It applies specifically to certain serial numbers of model 206B and 206L helicopters and excludes those modified by specific Supplemental Type Certificates.

Airworthiness Directive
  • Bell 206
  • Bell Helicopter Textron Canada Limited 206B
  • Bell Helicopter Textron Canada Limited 206L

EASA AD CF-2018-16

Jun 18, 2018

Equipment / Furnishings — Seat Belt Comfort Clips Adverse Effect on Occupant Restraint

Canadian Airworthiness Directive CF-2018-16 addresses the safety issue related to seat belt comfort clips installed on Bell Helicopter Textron Canada Limited (BHTCL) models 206, 222, 230, 407, 427, 429, and 430 helicopters. The directive identifies that these comfort clips can interfere with the shoulder harness inertia reel, potentially preventing proper locking and increasing injury risk during emergency landings. It mandates removal of these clips and prohibits their installation to ensure occupant restraint effectiveness.

Airworthiness Directive
  • Bell 206
  • Bell 222
  • Bell 230
  • Bell 407
  • Bell 427
  • Bell 429
  • Bell 430
  • Bell Helicopter Textron Canada Limited 206
  • Bell Helicopter Textron Canada Limited 222
  • Bell Helicopter Textron Canada Limited 230
  • Bell Helicopter Textron Canada Limited 407
  • Bell Helicopter Textron Canada Limited 427
  • Bell Helicopter Textron Canada Limited 429
  • Bell Helicopter Textron Canada Limited 430

EASA SIB SW-15-20

Aug 18, 2015

Helicopters modified by Air Comm Corp. STC - Air Conditioning System Wiring

The FAA Special Airworthiness Information Bulletin SAIB: SW-15-20 provides information regarding potential overheating and melting of connectors in the air conditioning wiring of helicopters modified by Air Comm Corporation Supplemental Type Certificates (STCs). Affected helicopter models include Bell Helicopter 206, Bell 407, Bell 427, Agusta A119, Airbus AS350, Airbus EC120, and Airbus EC130. This bulletin alerts operators to possible wiring issues related to Molex connectors installed per Air Comm STCs.

Safety Information Bulletin
  • Bell 206
  • Bell 407
  • Bell 427
  • Agusta A119
  • Airbus AS350
  • Airbus EC120
  • Airbus EC130

EASA SIB 2007-25

Dec 6, 2010

WITHDRAWN / CANCELLED - TRANSPORT CANADA AD CF-2007-21R1 AND FAA AD 2007-19-53 HAVE BEEN ADOPTED BY EASA

The document titled 'WITHDRAWN / CANCELLED - TRANSPORT CANADA AD CF-2007-21R1 AND FAA AD 2007-19-53 HAVE BEEN ADOPTED BY EASA' is an EASA Safety Information Notice 2007-25 issued on 2007-09-17. It addresses tail rotor blade safety issues on various Bell helicopter models including the 204B, 205 series, 206 series, 206L series, 212, 222 series, 230, 407, 412 series, 427, and 430. The notice references Transport Canada Emergency AD CF-2007-2L1 and FAA Emergency AD 2007-19-53, which require inspections and corrective actions for tail rotor blades with missing balance weight screws.

Safety Information Bulletin
  • Bell 204B
  • Bell 205
  • Bell 206
  • Bell 206L
  • Bell 212
  • Bell 222
  • Bell 230
  • Bell 407
  • Bell 412
  • Bell 427
  • Bell 430

EASA SIB SW-10-42R1

Aug 17, 2010

Apical Industries, Inc. Emergency Float Kits (STC-installed) for Bell 206 and 407 series Helicopters

Special Airworthiness Information Bulletin SAIB: SW-10-42R1 is a revised FAA information bulletin addressing uneven deployment issues with Apical Industries, Inc. Emergency Float Kits installed on Bell 206 and Bell 407 series helicopters. The affected kits include specific part and serial numbers under STC SR01535LA. This bulletin informs operators about a deployment problem caused by incorrect installation of float inflation hoses.

Safety Information Bulletin
  • Bell 206
  • Bell 407

EASA SIB 2010-01R1

Feb 5, 2010

Failure of compressor adapter couplings in Rolls-Royce Corporation (RRC) Model 250-C20, -C20B, -C20F, -C20J, -C20S, -C20W and —B17 series turboprop and turboshaft engines

EASA Safety Information Bulletin (SIB) No. 2010-01R1 addresses the failure of compressor adapter couplings in Rolls-Royce Corporation Model 250-C20, -C20B, -C20F, -C20J, -C20S, -C20W, and -B17 series turboprop and turboshaft engines. These engines are installed on various helicopters including Agusta A109 series, Bell 206 series, Enstrom 480 series, Eurocopter AS355 and BO-105 series, MD Helicopters 369 series, Schweizer 269D, and fixed-wing aircraft such as the Britten-Norman BN-2T. The bulletin highlights safety concerns following multiple failures and related FAA Airworthiness Directive 2004-26-09.

Safety Information Bulletin
  • Agusta A109
  • Bell 206
  • Enstrom 480
  • Eurocopter AS355
  • Eurocopter BO-105
  • MD Helicopters 369
  • Schweizer 269D
  • Britten-Norman BN-2T

EASA SIB 2007-02

Jan 18, 2007

FAA SAIB NE-06-52 - Rolls-Royce Corporation 250-C30, -C40 and -C47 series Engines Combustor Liners

EASA Safety Information Notice 2007-02 is an informational bulletin addressing issues with combustor liners in Rolls-Royce Corporation 250-C30, -C40, and -C47 series engines. These engines are installed in helicopters including Bell models 206, 230, 407, and 430; MD Helicopter models 369F, 369FF, and 600; and Sikorsky model S76A. The notice highlights concerns about the use of an unapproved material, Hastelloy X, in combustor liner mixing cups, which may affect engine performance.

Safety Information Bulletin
  • Bell 206
  • Bell 230
  • Bell 407
  • Bell 430
  • MD Helicopters 369F
  • MD Helicopters 369FF
  • MD Helicopters 600
  • Sikorsky S76A