EASA AD 2019-0192
Electrical Power — Ram Air Turbine Free Rotation — Manual Check
Summary
EASA Airworthiness Directive 2019-0192 is an airworthiness directive addressing the Airbus A380 aeroplanes equipped with specific Ram Air Turbine (RAT) parts, identified by part numbers 1704287G and 1704287H with serial numbers AAB4000001 to AAB4000333. This directive mandates a manual free rotation check of the RAT to detect water ingress and corrosion that could impair RAT operation and electrical power generation. It applies to Airbus A380 models -841, -842, and -861 with specified manufacturer serial numbers.
What Changed
EASA Airworthiness Directive 2019-0192 supersedes AD 2019-0124 and reduces the compliance time for the manual turbine free rotation check of the affected RAT parts. It requires the entire fleet to complete the check within four months of the effective date, accelerating the previous timeline. The directive retains the original inspection and corrective action requirements but enforces earlier compliance.
Why It Matters
This directive is critical for aviation professionals because undetected water ingress and corrosion in the RAT gearbox can lead to RAT failure, resulting in loss of electrical generation and potentially reduced aircraft control in emergency electrical conditions. Operators and maintenance teams must ensure timely inspections and corrective actions to maintain aircraft safety and regulatory compliance. Failure to comply could compromise aircraft airworthiness and operational safety.
What To Do
Operators must perform a manual free rotation check of the affected RAT parts within four months of 31 August 2019. If no discrepancies are found, the gearbox must be inspected, drained, flushed, and refilled with new oil before the next flight. If the turbine fails the rotation check, the affected RAT must be replaced before the next flight. Additionally, a report including a digital photo of the oil condition must be submitted to Collins Aerospace within 30 days after corrective actions or the effective date, whichever is later.
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