EASA Regulations for Md Helicopters Inc (Mdhi) 369

8 airworthiness directives and regulations affecting Md Helicopters Inc (Mdhi) 369.

EASA AD US-2025-17-11

Rotors Flight Control - Tail Rotor Pedal Support Brackets - Repetitive Inspections

The Federal Register document titled "Rotors Flight Control - Tail Rotor Pedal Support Brackets - Repetitive Inspections" is a final rule airworthiness directive (AD 2025-17-11) issued by the FAA affecting MD Helicopters, LLC models 369 (Army YOH-6A), 369A (Army OH-6A), 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N. This AD addresses multiple reports of cracked tail rotor pedal support brackets by requiring repetitive inspections and, depending on findings, replacement or refinishing of affected brackets. It also prohibits installation of certain magnesium cast tail rotor pedal support brackets to ensure continued airworthiness.

Oct 9, 2025

Airworthiness DirectiveMaintenanceSafety MgmtMd Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NMd Helicopters Inc (Mdhi) 600N

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 US-2024-23-06

Rotorcraft Flight Control - Torque Tube Assembly and Roller Bearings - Inspection

The document titled 'Rotorcraft Flight Control - Torque Tube Assembly and Roller Bearings - Inspection' is a regulatory directive addressing the inspection requirements for torque tube assemblies and roller bearings in rotorcraft flight control systems. It focuses on ensuring the integrity and safety of these critical components to maintain flight control reliability. The directive applies specifically to affected rotorcraft models equipped with the specified torque tube assemblies and roller bearings.

Nov 20, 2024

Airworthiness DirectiveMaintenanceSafety MgmtMd Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NMd Helicopters Inc (Mdhi) 600N

EASA AD US-2021-22-11

Rotors Flight Control - Pilot-to-Copilot Tail Rotor Torque Tube - Inspection / Removal

Federal Register Volume 86, Number 231 (December 6, 2021) - Airworthiness Directive 2021-22-11 is a final rule issued by the FAA addressing certain MD Helicopters Inc. models 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N equipped with pilot-to-copilot tail rotor torque tube part numbers 369H7531-9, -11, or -13. This directive mandates inspections and potential removal of the torque tube due to a reported spiral crack that compromises tail rotor control. The AD aims to ensure continued airworthiness and safety of these helicopter models.

Dec 16, 2021

Airworthiness DirectiveMaintenanceSafety MgmtMd Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NMd Helicopters Inc (Mdhi) 600NMD Helicopters 369DMD Helicopters 369EMD Helicopters 369FMD Helicopters 369FFMD Helicopters 369HMD Helicopters 369HEMD Helicopters 369HMMD Helicopters 369HSMD Helicopters 500NMD Helicopters 600N

EASA AD US-2020-18-20

Main Rotor - Main Rotor Blade Leading Edge Abrasion Strip - Inspection

FAA Airworthiness Directive 2020-18-20 is a final rule addressing certain MD Helicopters Inc. models 369A, 369D, 369E, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N equipped with specific main rotor blade part numbers fitted with 1.25 inch chord length nickel abrasion strips manufactured or installed by Helicopter Technology Company, LLC. The directive mandates inspections due to reports of abrasion strips detaching in flight, posing a safety risk. It requires tap inspections of the main rotor blade leading edge abrasion strips to detect damage or delamination.

Sep 25, 2020

Airworthiness DirectiveMaintenanceSafety MgmtMd Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NMd Helicopters Inc (Mdhi) 600NMD Helicopters 369AMD Helicopters 369DMD Helicopters 369EMD Helicopters 369FFMD Helicopters 369HMD Helicopters 369HEMD Helicopters 369HMMD Helicopters 369HSMD Helicopters 500NMD Helicopters 600N

EASA AD US-2020-11-07

Main Rotor System - Hub Lead-lag Bolts - Removal

The Federal Aviation Administration's Airworthiness Directive 2020-11-07 addresses MD Helicopters Inc. models 369D, 369E, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N. It mandates the removal from service of certain main rotor hub lead-lag bolts, part number 369D21220, that have non-conforming serial numbers due to unauthorized cadmium plating repairs. This directive aims to ensure continued airworthiness and safety of these helicopter models.

Jun 12, 2020

Airworthiness DirectiveMaintenanceSafety MgmtMd Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NMd Helicopters Inc (Mdhi) 600NMD Helicopters 369DMD Helicopters 369EMD Helicopters 369FFMD Helicopters 369HMD Helicopters 369HEMD Helicopters 369HMMD Helicopters 369HSMD Helicopters 500NMD Helicopters 600N

EASA AD US-2019-05-04

Main Rotor - Blades - Inspection

Federal Register Volume 84, Number 49 (March 13, 2019) Final Rule titled 'Main Rotor - Blades - Inspection' issues a new airworthiness directive (AD 2019-05-04) for MD Helicopters, Inc. models 369A, 369D, 369E, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N. The AD mandates inspections of specific main rotor blades (MRBs) for cracks to address safety concerns. It applies to helicopters equipped with Helicopter Technology Company, LLC MRB part numbers 369A1100, 369D21100, 369D21102, 369D21120, 369D21121, 369D21123, 500P2100, or 500P2300.

Apr 3, 2019

EASA AD CF-2019-01

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.

Jan 10, 2019

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Bell 206Bell 407Md Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NBell 206BBell 206LAirbus Helicopters AS350Airbus Helicopters AS355MD Helicopter 369MD Helicopter 500N