RegNotify

EASA Regulations for Airbus Helicopters MBB-BK 117

57 airworthiness directives and regulations affecting Airbus Helicopters MBB-BK 117.

EASA AD 2026-0109

Oxygen – Low Pressure Oxygen Hoses – Replacement

EASA Airworthiness Directive 2026-0109 is issued for MBB-BK117 D-2 and D-3 helicopters modified with EASA Supplemental Type Certificate 10051018 up to revision 5. It addresses the replacement of low-pressure oxygen hoses installed in Emergency Medical Service interiors manufactured by Mecaer Aviation Group. The directive mandates replacing specific oxygen hoses and assemblies to prevent potential oxygen leakage.

Jun 8, 2026
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117MBB-BK117 D-2MBB-BK117 D-3

EASA AD 2025-0298-E

Main Rotor — Swashplate — Inspection

EASA Airworthiness Directive 2025-0298-E is an emergency directive addressing the inspection of the main rotor swashplate on MBB-BK117 D-3 and D-3m helicopters. It mandates repetitive inspections of the swashplate bolts, specifically those with Part Number D623M2050206, due to reported excessive wear that could lead to bolt rupture and reduced helicopter control. The directive applies to all serial numbers of the affected helicopter models.

Dec 23, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD 2022-0168R2

Rotorcraft Flight Manual — Section Emergency Procedures — Amendment; Integrated Modular Avionics — Ethernet Network — Inspection

The Rotorcraft Flight Manual — Section Emergency Procedures — Amendment; Integrated Modular Avionics — Ethernet Network — Inspection is a regulatory document applicable to AIRBUS HELICOPTERS DEUTSCHLAND models EC135, 635, and MBB-BK 117. It addresses updates to the emergency procedures section of the flight manual and introduces inspection requirements for the integrated modular avionics Ethernet network. The document aims to enhance operational safety and avionics reliability for these specific rotorcraft types.

Oct 28, 2025
Airworthiness DirectiveFlight OpsMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117

EASA AD 2025-0188

Equipment / Furnishings — Large Hook Damper Assembly — Modification

EASA Airworthiness Directive 2025-0188 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters Deutschland GmbH MBB-BK117 C-2 and D-2 helicopters. The directive addresses the Large Hook Damper Assembly, specifically parts with Part Number 44307-480, installed on these helicopter models. It mandates modification and reidentification of affected parts to ensure continued airworthiness and safety.

Sep 1, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD 2025-0153

Equipment / Furnishings — Cargo Common Hook Beam — Modification

EASA Airworthiness Directive 2025-0153 is an official regulatory document addressing the modification of the Cargo Common Hook Beam (CCHB) on MBB-BK117 D-2 helicopters manufactured by Airbus Helicopters Deutschland GmbH. This directive mandates changes to the CCHB part number L851M1301101 and related fuel system components to prevent potential fuel leakage. The directive applies to all serial numbers of the MBB-BK117 D-2 helicopter variants.

Jul 18, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD 2015-0226R8

Equipment / Furnishings — Hoist — Test / Replacement

EASA Airworthiness Directive 2015-0226R8 is a regulatory document addressing the inspection, testing, and replacement requirements for Goodrich externally mounted rescue hoists installed on various helicopter models including Leonardo AW109SP, AB139, AW139, AB412; Bell Textron 212, 214, 412, 429, 430; Airbus Helicopters AS 365 N3, AS 332 L2, EC225 LP, MBB-BK117 C-2, EC135, EC635; MD Helicopters MD900; and Sikorsky S-61, S-76, and S-92A. The directive mandates load checks, cable replacements, and overload clutch replacements to ensure continued airworthiness and safety of hoist operations.

Jul 16, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters SA 330Airbus Helicopters AS 332Airbus Helicopters EC 225Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Bell 429Bell 430Bell Textron Inc. (Bti) 212Bell Textron Inc. (Bti) 412Leonardo S.P.A. Helicopters A109Leonardo S.P.A. Helicopters A119Leonardo S.P.A. Helicopters AB139Leonardo S.P.A. Helicopters AW139Leonardo S.P.A. Helicopters AB212Leonardo S.P.A. Helicopters AB412Md Helicopters Inc (Mdhi) MD900Mcdermott 214 Holdings, 214Sikorsky S-61Sikorsky S-76Sikorsky S-92

EASA AD 2025-0051R1

Equipment / Furnishings — Hoist — Replacement

EASA Airworthiness Directive 2025-0051R1 is a regulatory update addressing the replacement of rescue hoist assemblies on various Airbus Helicopters and Leonardo helicopter models, including the H160-B, EC 225 LP, EC 175 B, AS 332 L2, AS 365 N3, EC135, MBB-BK117, AW109SP, AB139, AW139, AW169, and AW189. The directive mandates inspections and replacement of affected hoist assemblies due to potential non-conformant overload clutch assemblies that could lead to hoist failure. This AD applies to all serial numbers of the listed helicopter models and specifies affected part numbers and serviceable part criteria.

May 7, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC175Airbus Helicopters H160Airbus Helicopters SA 330Airbus Helicopters AS 332Airbus Helicopters EC 225Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Leonardo S.P.A. Helicopters A109Leonardo S.P.A. Helicopters A119Leonardo S.P.A. Helicopters AB139Leonardo S.P.A. Helicopters AW139Leonardo S.P.A. Helicopters AW169Leonardo S.P.A. Helicopters AW189

EASA AD 2025-0055

Equipment / Furnishings — Rescue Hoist Cable Drum — Inspection

EASA Airworthiness Directive 2025-0055 is an airworthiness directive addressing the inspection of rescue hoist cable drums installed on Airbus Helicopters Deutschland GmbH EC135, EC635, and MBB-BK117 helicopter models. It mandates repetitive inspections of specific rescue hoist assemblies with certain part numbers to detect cracks that could compromise hoist cable operation. The directive applies to all serial numbers up to 1999 inclusive for the specified helicopter models.

Mar 11, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117

EASA AD 2025-0028

Main Rotor — Main Rotor Head — Inspection / Re-identification

The document titled 'Main Rotor — Main Rotor Head — Inspection / Re-identification' applies to the AIRBUS HELICOPTERS DEUTSCHLAND MBB-BK 117 helicopter model. It addresses inspection and re-identification procedures for the main rotor head to ensure continued airworthiness and safety of the affected aircraft. The document provides guidance on maintaining the integrity of the main rotor assembly.

Feb 7, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD 2025-0029

Main Rotor — Swashplate — Inspection

EASA Airworthiness Directive 2025-0029 is an airworthiness directive addressing the inspection of the main rotor swashplate on MBB-BK117 D-3 and D-3m helicopters. It specifically targets swashplates with Part Number D623M2050102 and serial numbers up to 0487 inclusive, except those already subjected to a supplementary inspection. The directive mandates a one-time inspection and corrective actions to ensure continued safe operation of affected helicopters.

Feb 7, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD 2025-0027

Main Rotor — Swashplate Inner and Outer Ring Bolts — Inspection / Replacement

EASA Airworthiness Directive 2025-0027 is an airworthiness directive addressing the inspection and replacement of main rotor swashplate inner and outer ring bolts on MBB-BK117 D-3 and D-3m helicopters. It applies to swashplates with part number D623M2050102 up to serial number 0503, excluding certain serial numbers and those already inspected and corrected. The directive mandates inspection and replacement of bolts to ensure structural integrity of the swashplate.

Feb 5, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD 2024-0222

[Correction] Equipment / Furnishings — Equipment Rack Extension Support Rails — Modification

EASA Airworthiness Directive 2024-0222 is a corrective directive addressing the modification of equipment rack extension support rails installed on MBB-BK117 C-2 helicopters modified by specific Aerolite AG Supplemental Type Certificates. The directive targets certain support tubes and fork fittings associated with equipment rack extensions to ensure continued airworthiness. It applies to all serial numbers of the MBB-BK117 C-2 helicopter modified by the listed STCs.

Jan 6, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD 2024-0249

Instruments — Warning Unit Emergency Off Switches — Operational Check

EASA Airworthiness Directive 2024-0249 is an operational check directive targeting the emergency off switches of warning units installed on Airbus Helicopters Deutschland GmbH EC135, EC635, and MBB-BK117 helicopter models. It mandates repetitive operational checks of these switches to detect mechanical failures that could lead to engine shutdown or fuel shut-off valve issues. The directive applies to all variants and serial numbers of the specified helicopter models.

Dec 19, 2024
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117

EASA AD 2024-0237-E

Rotors Flight Control — Tail Rotor Actuator — Inspection

EASA Airworthiness Directive 2024-0237-E is an emergency directive addressing the tail rotor actuator on MBB-BK117 C-2 helicopters. It mandates inspections of the tail rotor actuator part number B673M40A1002 due to reported vibrations and a worn, broken bolt that could lead to loss of helicopter control. The directive applies to all serial numbers of this helicopter model and requires repetitive inspections and corrective actions as necessary.

Dec 9, 2024
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117

EASA AD US-2024-20-07

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.

Nov 29, 2024
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters EC 120 BAirbus Helicopters BO 105Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Bell 206Bell 407Bell Textron Inc. (Bti) 210Bell Textron Inc. (Bti) 212Bell Textron Inc. (Bti) 412Leonardo S.P.A. Helicopters AB212Leonardo S.P.A. Helicopters AB412Md Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NRobinson R44 (Raven)Robinson R66Sikorsky S-76

EASA AD 2024-0131

Main Rotor — Control Rod Assembly / Pitch Link Assembly — Inspection

EASA Airworthiness Directive 2024-0131 is an airworthiness directive issued by the European Union Aviation Safety Agency concerning Airbus Helicopters Deutschland GmbH MBB-BK117 C-2 and D-2 helicopters. It mandates inspection of the main rotor control rod assembly and pitch link assembly, specifically parts with certain part numbers, to detect wear in spherical bearings that could affect rotor blade pitch and control.

Jul 8, 2024
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117Airbus Helicopters MBB-BK117 C-2Airbus Helicopters MBB-BK117 D-2

EASA AD 2024-0107

Equipment / Furnishings — Medical Equipment Support — Inspection

EASA Airworthiness Directive 2024-0107 is an airworthiness directive addressing the inspection of medical equipment support assemblies installed on MBB-BK117 D-2 and D-3 helicopters modified with EASA STC 10051018. The directive targets specific part numbers of the medical equipment support assemblies manufactured by MECAER AVIATION GROUP VIP Interiors to prevent potential detachment during flight. It mandates inspection and corrective actions to ensure continued airworthiness and occupant safety.

Jun 3, 2024
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117MBB-BK117 D-2MBB-BK117 D-3

EASA AD 2023-0213

Equipment / Furnishings — Hook Damper — Modification

EASA Airworthiness Directive 2023-0213 is an airworthiness directive addressing Airbus Helicopters Deutschland GmbH MBB-BK117 C-2, D-2, D-3, and D-3m helicopters. It focuses on the hook damper assemblies involving forged D-LOK and Slide-LOK hoist hooks and specific hook dampers and nuts. The directive mandates inspection and modification procedures to ensure safe operation of the affected hoist hook assemblies.

Dec 8, 2023
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117Airbus Helicopters MBB-BK117 C-2Airbus Helicopters MBB-BK117 D-2Airbus Helicopters MBB-BK117 D-3Airbus Helicopters MBB-BK117 D-3m

EASA AD 2023-0175

ATA — Rotorcraft Flight Manual — Altitude Correction — Amendment ATA 21 — Air Conditioning — Cooling System — Modification

EASA Airworthiness Directive 2023-0175 is an amendment addressing altitude correction procedures and air conditioning system modifications for Airbus Helicopters Deutschland GmbH MBB-BK117 D-2, D-2m, D-3, and D-3m helicopters. The directive mandates changes to the Rotorcraft Flight Manual Supplement and replacement of specific condenser outlet grids with covers to correct airspeed and altitude indication errors. It applies to all serial numbers of the affected helicopter models.

Oct 5, 2023
Airworthiness DirectiveFlight OpsMaintenanceSafety MgmtAirbus Helicopters MBB-BK 117Airbus Helicopters MBB-BK117 D-2Airbus Helicopters MBB-BK117 D-2mAirbus Helicopters MBB-BK117 D-3Airbus Helicopters MBB-BK117 D-3m

EASA AD 2023-0066

Equipment / Furnishings — Hoist Boom Assembly — Inspection

EASA Airworthiness Directive 2023-0066 is an airworthiness directive issued by the European Union Aviation Safety Agency concerning the inspection of hoist boom assemblies on Airbus Helicopters Deutschland GmbH EC135, EC635, and MBB-BK117 helicopter models. The directive mandates repetitive inspections of specific hoist boom assembly parts identified by part numbers 44301-500, 44307-500, and 44307-500-1 to ensure continued airworthiness and safety. It applies to all variants and serial numbers of the affected helicopter models.

Mar 24, 2023
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Airbus Helicopters EC635Airbus Helicopters MBB-BK117