Flight Controls – Rudder Electrical Backup Hydraulic Actuator Solenoid Valves – Replacement / Master Minimum Equipment List – Amendment
Superseded. Comply with 2021-0051, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2019-0310
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must amend their MMEL within 30 days of 3 January 2020 to incorporate specified restrictions and inform flight crews accordingly. Affected solenoid valves on rudder EBHAs must be replaced with serviceable parts within 12 months of 3 January 2020. Installation of affected parts on rudder or elevator controls is prohibited from 3 January 2020 onward. After replacement, MMEL restrictions related to rudder functions can be removed.
Summary
EASA Airworthiness Directive 2019-0310R1 is an amendment addressing safety concerns on Airbus A380-841, A380-842, and A380-861 aeroplanes related to rudder electrical back-up hydraulic actuator solenoid valves. It mandates identification and replacement of affected solenoid valves with specific part and serial numbers to prevent potential rudder or elevator runaway conditions. The directive also requires temporary amendments to the Master Minimum Equipment List (MMEL) to impose operational restrictions until affected parts are replaced.
What changed
This revision extends the compliance time for replacing affected solenoid valves on the rudder electrical back-up hydraulic actuators due to unforeseen industrial constraints. It updates the original AD 2019-0310 by revising dispatch restrictions and MMEL amendments, while maintaining the requirement to replace affected parts within the new extended timeframe. The AD remains interim pending further actions for elevator servo control solenoid valves.
Why it matters
This directive is critical for aviation professionals to prevent potential loss of control caused by malfunctioning solenoid valves in the rudder and elevator control systems. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. The MMEL amendments affect dispatch decisions and operational procedures, impacting flight crew and maintenance planning.
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