EASA AD 2018-0111R1
Water/Waste — Forward Fuselage Shrouded Pipe T-Boxes and Clamps — Replacement
Summary
EASA Airworthiness Directive 2018-0111R1 is an updated regulatory requirement addressing the replacement of potable water shrouded pipe T-Boxes and clamps on Airbus A350-941 aeroplanes. This directive applies to all serial numbers except those with Airbus modifications 111435 or 111440 incorporated during production. It mandates corrective action to prevent water ingress into the avionics bay caused by cracks and clamp torque loss.
What Changed
EASA Airworthiness Directive 2018-0111R1 revises the original AD 2018-0111 by excluding Airbus A350-941 aeroplanes that have already incorporated modification 111440 from its applicability. The revision clarifies the affected aircraft and reinforces the requirement to replace the faulty potable water T-Boxes and clamps with improved parts as specified in Airbus Service Bulletin A350-38-P004.
Why It Matters
This directive is critical for aviation professionals because leakage in the potable water system can lead to water ingress in the avionics bay, potentially causing system failures and unsafe conditions. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. Failure to comply could result in operational restrictions or safety risks.
What To Do
Operators of affected Airbus A350-941 aeroplanes must replace the potable water T-Boxes and clamps with new parts following Airbus Service Bulletin A350-38-P004 within 36 months from the effective date of 31 May 2018. Compliance with this directive is mandatory unless the aircraft has already incorporated Airbus modification 111435 or 111440. Requests for alternative compliance methods can be submitted to EASA if justified.
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