Pneumatic – High Pressure Valve – Inspection / Replacement
Superseded. Comply with 2022-0227, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2022-0170-E
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must amend the AFM within 7 days of the directive's effective date, implement the MMEL update, perform HPV seal integrity tests before the next flight, and replace HPV clips before exceeding 4,000 flight hours or within 1,500 flight hours after the effective date, whichever is later. Additionally, they must follow specific troubleshooting and maintenance procedures after any relevant fault messages and report any failures to Airbus within 28 days.
Summary
EASA Airworthiness Directive 2022-0181 is an airworthiness directive issued for Airbus A330-841 and A330-941 aeroplanes addressing issues related to the engine bleed air system high pressure valve (HPV) clips, part number 6764-222. The directive mandates amendments to the Airplane Flight Manual (AFM), updates to the Master Minimum Equipment List (MMEL), and repetitive inspections and replacements of HPV clips to prevent potential duct bursts and loss of airplane control.
What changed
This directive supersedes EASA Emergency AD 2022-0170-E and introduces additional maintenance actions including repetitive replacement of HPV clips, AFM amendments incorporating a temporary revision, and implementation of an updated MMEL. It also requires HPV seal integrity tests and specific troubleshooting procedures following certain maintenance messages or failures.
Why it matters
This directive is critical for operators and maintenance organizations to prevent failures of the HPV clips that could lead to high pressure and temperature damage downstream, risking duct bursts and loss of airplane control. Compliance ensures continued airworthiness and operational safety of affected Airbus A330 models, avoiding potential in-flight hazards and regulatory non-compliance.
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