EASA AD 2018-0178
Hydraulic System / Fuel Tank Inerting System — Engine Driven Pump Rapid Overheat — Master Minimum Equipment List Restriction / Software Update / Modification
Summary
Hydraulic System / Fuel Tank Inerting System — Engine Driven Pump Rapid Overheat — Master Minimum Equipment List Restriction / Software Update / Modification is a regulatory document concerning the Airbus A350 aircraft. It addresses issues related to rapid overheating of the engine-driven pump affecting the hydraulic and fuel tank inerting systems. The document outlines restrictions to the Master Minimum Equipment List (MMEL) and introduces software updates and modifications to mitigate these issues.
What Changed
This document introduces new restrictions to the MMEL specifically for the Airbus A350 to manage the risk of engine-driven pump rapid overheating. It also mandates a software update and hardware modifications to improve system reliability and safety. These changes are designed to prevent overheating incidents and ensure continued safe operation of the affected systems.
Why It Matters
The changes are critical for operators and maintenance organizations to maintain aircraft safety and regulatory compliance. The updated MMEL restrictions and required software/hardware modifications help prevent potential system failures that could impact flight safety. Compliance teams must ensure these updates are integrated into maintenance and operational procedures to avoid operational disruptions and regulatory penalties.
What To Do
Operators of Airbus A350 aircraft must review and apply the updated MMEL restrictions as specified. Maintenance teams are required to implement the mandated software updates and perform the necessary modifications on the engine-driven pump systems. Stakeholders should monitor for any compliance deadlines and ensure all actions are documented according to regulatory standards.
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