AD 2025-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model EC225LP | Airworthiness Directives; Airbus Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
Defective ceramic balls in the bearing installed in the swashplate assembly of the main rotor mast assembly could lead to premature spalling of the ball itself and of the bearing, loss of function of the bearing, seizure of the M/R mast swashplate, overload of the M/R mast scissor, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitively inspect the bearing in the swashplate assembly of certain main rotor mast assemblies and mast swashplate assemblies for discrepancies (ceramic balls that have a hard point or sensitive axial play or both). Depending on the findings, replace the affected M/R mast assembly or mast swashplate assembly with a serviceable part. Prohibit installing those M/R mast assemblies and mast swashplate assemblies unless they are serviceable as defined.
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Compliance Time
Within 12 months of the effective date of this AD
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Affected Aircraft
Airbus Helicopters Model EC225LP helicopters, with specific part-numbered main rotor mast assemblies and mast swashplate assemblies as defined in the European Union Aviation Safety Agency (EASA) AD 2024-0160.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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