Tail Rotor — Tail Rotor Slider Assembly — Inspection
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of AB139 and AW139 helicopters must perform a detailed visual inspection of the tail rotor slider assembly within the specified flight hour thresholds after 11 January 2019. If only refinishing signs are found, inspections must be repeated every 12 months. Any corrosion detected requires immediate replacement of the affected part before the next flight. Only serviceable parts may be installed from the effective date onward.
Summary
EASA Airworthiness Directive 2018-0292 is an airworthiness directive addressing the inspection of the tail rotor slider assembly, Part Number 3G6430A00131, on Leonardo S.p.A. AB139 and AW139 helicopters. It mandates a one-time detailed visual inspection for corrosion and damage, with possible repetitive inspections or replacement depending on findings. The directive aims to prevent potential failure of the tail rotor controls due to fatigue cracks caused by corrosion.
What changed
This new airworthiness directive introduces mandatory inspections of the tail rotor slider assembly on all AB139 and AW139 helicopters. It requires operators to perform a detailed visual inspection within specified flight hour limits and to replace any corroded parts before further flight. The directive also allows installation of only serviceable parts from the effective date.
Why it matters
This directive is critical for aviation professionals because undetected corrosion and fatigue cracks in the tail rotor slider assembly can lead to tail rotor control failure and loss of yaw control, posing a serious safety risk. Operators and maintenance organizations must comply to ensure continued airworthiness and avoid potential accidents. Compliance teams need to track inspection intervals and part replacements to meet regulatory requirements.
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