EASA AD 2025-0018
SUPERSEDED BY EASA AD 2025-0040
Summary
EASA Airworthiness Directive 2025-0018 is issued for Airbus Helicopters H160-B models concerning the inspection of rotating scissors spherical bearings, part number U623A40T1007. This directive mandates repetitive inspections to detect excessive axial play in these bearings to ensure continued safe operation. It applies to all serial numbers of the H160-B helicopter and provides detailed inspection intervals and corrective actions.
What Changed
EASA Airworthiness Directive 2025-0018 supersedes AD 2024-0206-E and extends the list of affected parts to include all serial numbers. It reduces the initial inspection compliance time and introduces repetitive inspections instead of a one-time inspection. The directive also updates definitions and inspection requirements based on the latest Emergency Alert Service Bulletin from Airbus Helicopters.
Why It Matters
This directive is critical for aviation professionals as it addresses a potential unsafe condition that could lead to reduced helicopter control due to excessive axial play in main rotor bearings. Operators and maintenance teams must comply to prevent in-flight control issues and ensure airworthiness. The repetitive inspection requirements increase the need for ongoing monitoring and timely replacement of affected parts to maintain safety.
What To Do
Operators of Airbus Helicopters H160-B must inspect the rotating scissors spherical bearings within 55 flight hours or 30 days after the effective date, whichever occurs first, and continue inspections at intervals based on measured axial play. If axial play exceeds specified limits, parts must be replaced before further flight. Inspection results must be reported to Airbus Helicopters within 7 days of measurement. Installation of affected parts is allowed only if they are serviceable and inspected accordingly.