Fuel – Engine Low Pressure Shut Off Valve Electrical Harness Routing – Modification
Superseded. Comply with 2024-0101R1, which replaces this document.
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus A380-841, A380-842, and A380-861 aircraft must modify the electrical harness routing as specified in Airbus Service Bulletin A380-28-8072 or A380-28-8073 within 42 months from the effective date of 29 March 2021. Compliance with the modification instructions is mandatory unless previously accomplished. Alternative methods of compliance may be approved by EASA if properly substantiated.
Summary
EASA Airworthiness Directive 2021-0073 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus A380-841, A380-842, and A380-861 aeroplanes. It addresses an unsafe condition related to the electrical harness routing connected to the engine low pressure shut off valve on specific engine models, including Engine Alliance GP7200 and Rolls-Royce RB211 Trent 900 engines. The directive mandates modifications to ensure compliance with redundancy requirements to prevent uncontrolled engine rotor failure risks.
What changed
This directive introduces a mandatory modification of the electrical harness routing between the inboard and outboard pylon closing ribs on affected Airbus A380 aircraft. The modification corrects the harness configuration to meet redundancy requirements for the low pressure shut off valve, reducing the risk of loss of engine fuel isolation capability. Airbus modification 77076, applied in production, and associated service bulletins provide the instructions for this change.
Why it matters
This airworthiness directive is critical for aviation professionals because it addresses a potential safety hazard that could lead to uncontrolled engine fires due to failure in fuel isolation during an uncontrolled engine rotor failure event. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. Failure to comply could result in operational restrictions or increased risk during flight.
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