Flight Controls — Elevators and Rudder Servocontrols — Replacement / Modification
- Published
- Effective
- Deadline
- Replaces
- 2018-0145R2
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Airbus A350-941 and A350-1041 aeroplanes with affected servocontrol parts must replace or modify these parts within specified flight hour limits or timeframes: before exceeding 1,200 flight hours or within 30 days after 24 July 2018 if under 1,200 flight hours, or within 9 months after 24 July 2018 if 1,200 flight hours or more. Additionally, from the effective date, no affected parts may be installed unless they are serviceable as defined by the directive.
Summary
EASA Airworthiness Directive 2018-0145R3 is an updated regulatory requirement addressing flight controls on Airbus A350-941 and A350-1041 aeroplanes. It mandates the replacement or modification of certain elevators and rudder servocontrols identified as affected parts due to potential uncommanded actuator movements. This directive applies to all manufacturer serial numbers of the specified Airbus A350 models.
What changed
This revision corrects the information regarding the markings on servocontrols after in-shop rework or modification, clarifying the identification of serviceable parts. It updates the definitions and compliance instructions from the previous revision 2018-0145R2 to ensure accurate part identification and compliance. No new affected parts or aircraft models were added in this revision.
Why it matters
This directive is critical for aviation professionals because it addresses a safety risk involving uncommanded flight control actuator movements caused by debris in the Electro Hydraulic Servo Valve. Operators and maintenance organizations must ensure affected servocontrols are replaced or modified to maintain aircraft control integrity and comply with continuing airworthiness requirements. Failure to comply could result in reduced control of the aircraft, posing a significant safety hazard.
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