EASA AD CF-2026-50
Tail Rotor – Tail Rotor Pitch Link Spherical Bearing Missing Hard Coating - Inspection
Summary
Canadian Airworthiness Directive CF-2026-50 addresses the issue of missing hard coating on the tail rotor pitch link spherical bearings installed on Bell Helicopter Textron Canada Limited model 429 helicopters, serial number 57001 and subsequent. The directive mandates repetitive visual inspections and replacement of affected tail rotor pitch link assemblies with part numbers 429-012-212-105 or 429-012-212-107 if wear or damage is detected. This AD aims to prevent loss of tail rotor directional control due to premature bearing wear.
What Changed
This new Airworthiness Directive introduces mandatory initial and repetitive visual inspections of the tail rotor pitch link spherical bearings on Bell 429 helicopters to detect premature wear caused by missing hard coating. It requires replacement of affected parts that fail inspection and permits installation of affected parts only if inspection requirements are met. The directive also provides credit for inspections performed before its effective date.
Why It Matters
This AD is critical for aviation professionals as it addresses a safety risk that could lead to loss of tail rotor control, potentially preventing safe helicopter landings. Operators and maintenance teams must increase inspection frequency and ensure timely replacement of worn parts to maintain airworthiness and regulatory compliance. Failure to comply could result in unsafe flight conditions and regulatory penalties.
What To Do
Operators of Bell 429 helicopters with serial number 57001 and later must perform an initial visual inspection of the affected tail rotor pitch link assemblies before 150 hours air time or within 30 hours if already over 120 hours. Repeat inspections are required every 110 hours thereafter. Any parts failing inspection must be replaced before further flight. Inspections done before the AD's effective date are credited, and installation of affected parts is allowed only after compliance with inspection requirements.
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