Pneumatic – High Pressure Valve – Inspection / Replacement
Superseded. Comply with 2025-0104, which replaces this document.
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must amend the AFM by incorporating the specified temporary revisions within 7 days of the effective dates, implement the MMEL updates, and perform inspections or replacements of HPV clips according to the aircraft's BMC software group. Modifications per Airbus service bulletins may change the aircraft group classification and affect compliance requirements. All flight crews must be informed of the changes, and dispatch restrictions are lifted upon MMEL update implementation. Compliance deadlines include 7 days after 5 September 2022 for initial AFM amendments and 7 days after 2 June 2023 for subsequent revisions.
Summary
EASA Airworthiness Directive 2023-0111R1 is an updated safety directive addressing issues with the high pressure valve (HPV) clips on Airbus A330-841 and A330-941 aeroplanes. It mandates amendments to the Aircraft Flight Manual (AFM), updates to the Master Minimum Equipment List (MMEL), and inspection or replacement of HPV clips to prevent potential duct bursts and loss of aircraft control. This directive applies to all manufacturer serial numbers of the specified Airbus A330 models.
What changed
This revision introduces additional criteria for HPV clip replacement based on flight cycles as well as flight hours, and incorporates instructions depending on the Bleed Monitoring Computer (BMC) software version installed. It allows relaxation of maintenance requirements for aircraft equipped with BMC software version 5.0 or later and updates related AFM temporary revisions and MMEL content accordingly. The directive supersedes previous ADs and incorporates new Airbus service bulletins and alert operator transmissions.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk involving leaking HPV clips that can cause high pressure and temperature damage downstream, potentially leading to duct bursts and loss of aircraft control. Operators and maintenance organizations must comply to ensure continued airworthiness and avoid operational disruptions. The updated requirements also affect dispatch conditions and maintenance planning, especially for aircraft with different BMC software configurations.
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