Power Plant — Hydraulic Pressure Switch Harness — Inspection
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus A330 aeroplanes must inspect the hydraulic pressure switch harnesses on each affected engine within 1,000 flight hours or 30 days from 2021-06-01, whichever occurs first. If discrepancies are found, corrective actions must be completed before the next flight. Installation of affected engines is prohibited from the effective date until compliance is demonstrated.
Summary
EASA Airworthiness Directive 2021-0128 is an official directive addressing Airbus A330-243, A330-243F, A330-341, A330-342, and A330-343 aeroplanes equipped with Rolls-Royce Trent 700 engines. It mandates inspection of the hydraulic pressure switch harnesses to detect and correct incorrect electrical connector installations that could cause loss of hydraulic systems in flight. This directive aims to ensure continued airworthiness and prevent potential loss of aircraft control due to hydraulic system failures.
What changed
EASA Airworthiness Directive 2021-0128 introduces a new mandatory inspection requirement for affected Airbus A330 aeroplanes with Trent 700 engines. It requires a one-time inspection of hydraulic pressure switch harnesses and corrective actions if discrepancies are found. Additionally, it prohibits installation of affected engines until compliance with the directive is confirmed.
Why it matters
This directive is critical for aviation professionals because it addresses a safety issue that could lead to loss of multiple hydraulic systems and potentially loss of aircraft control. Operators and maintenance organizations must comply to avoid in-flight hydraulic failures and ensure regulatory compliance. It also affects engine installation procedures, impacting maintenance planning and operational readiness.
More for Airbus A330
All 221- EASA AD 2026-0200Landing Gear – Tachometer Wiring Harness – ModificationOct 20, 2026
- EASA AD 2026-0194Aircraft Flight Manual Supplement – Abnormal Procedures – AmendmentOct 12, 2026
- EASA AD 2026-0189Engine Oil – Oil Pump – Operational ProhibitionOct 1, 2026
- EASA PAD 26-107Flight Controls – Flight Control Primary Computer – ModificationSep 17, 2026
- EASA PAD 26-108Flight Controls – Flight Control Primary Computer – ModificationSep 17, 2026
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