Airbus A330/A340 Aeroplanes - Hydraulic Pump Electrical Motor Connectors Incorrect Installation
- Published
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What to do
Operators and Maintenance and Repair Organizations should follow the updated Airbus Service Bulletins and Electrical Standard Practices Manual for hydraulic pump electrical motor connector installations. They should verify that sealing plugs are correctly installed and inspect for any signs of chafing or incorrect sleeve placement. Although the bulletin is informational and not mandatory, adherence to the recommended practices is strongly advised to minimize human error.
Summary
EASA Safety Information Bulletin SIB No. 2014-05 addresses incorrect installation of hydraulic pump electrical motor connectors on Airbus A330 and A340 aeroplanes. The bulletin covers multiple A330 and A340 variants and highlights issues related to internal arcing and fluid ingress caused by missing sealing plugs and incorrect sleeve installation. It provides information to raise awareness among operators and maintenance organizations about proper installation practices.
What changed
This bulletin informs about in-service occurrences of connector damage despite compliance with previous EASA AD 2010-0086R1, identifying human error during installation as the root cause. Airbus has implemented corrective actions on the Final Assembly Line and revised relevant Service Bulletins to improve installation instructions based on the Airbus Electrical Standard Practices Manual. The bulletin does not mandate new requirements but emphasizes adherence to updated maintenance documentation.
Why it matters
The information is critical for aviation professionals to prevent electrical connector failures that can lead to hydraulic system malfunctions. Proper installation reduces the risk of internal arcing and fluid ingress, which can compromise aircraft safety and reliability. Operators and MROs benefit from understanding these findings to ensure compliance with best maintenance practices and avoid costly repairs or operational disruptions.
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