EASA AD 2020-0167R1
Flight Control and Guidance System — Ram Air Turbine Performance — Modification (Software Update) ; Air Conditioning — Electrical Power Supply to Air Generation System Ram Air Actuators — Modification
Summary
EASA Airworthiness Directive 2020-0167R1 is a regulatory update affecting Airbus A350-941 aeroplanes. It addresses modifications to the flight control and guidance system software and the electrical power supply to the air generation system ram air actuators to ensure proper ram air turbine performance and air conditioning system reliability.
What Changed
This revision extends the compliance time for modifying the electrical power supply of the air generation system ram air outlet door actuators from 6 years to 78 months. It retains previous requirements to install updated flight control and guidance system software to maintain ram air turbine electrical power generation performance during emergency conditions.
Why It Matters
This directive is critical for maintaining safe operation of Airbus A350-941 aircraft by preventing partial or total loss of ram air turbine electrical power generation during emergencies. Compliance ensures continued aircraft control and system functionality, which is essential for operators, maintenance organizations, and regulatory compliance teams.
What To Do
Operators of affected Airbus A350-941 aeroplanes must install the flight control and guidance system software update within 10 months after 3 September 2019 if not already done. Additionally, they must modify the electrical power supply to the air generation system ram air outlet door actuators before the aircraft reaches 78 months since its date of manufacture.
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