EASA AD 2026-0196
Equipment / Furnishings – System Interface Unit – Replacement
Summary
EASA Airworthiness Directive 2026-0196 is issued for Airbus Helicopters H160-B models concerning the replacement of the System Interface Unit (SIU) Part Number 704A45751326. This directive addresses a discrepancy in the overhaul timing of the SIU, which is critical for beacon deployment in emergencies. The AD mandates replacement of affected SIUs to ensure continued airworthiness and safety.
What Changed
This new Airworthiness Directive introduces a requirement to replace the affected System Interface Unit on H160-B helicopters based on the correct Time Since Manufacturing or last overhaul, clarifying the start date for the Time Between Overhaul. It establishes compliance times for replacement and restricts installation of non-serviceable SIUs.
Why It Matters
The directive is crucial for operators and maintenance organizations to prevent potential failure of emergency beacon deployment, which could delay rescue operations after an accident. Compliance ensures adherence to regulatory requirements and maintains aircraft safety and airworthiness.
What To Do
Operators of H160-B helicopters with affected SIUs must replace these units within six months if they have accumulated more than 9 years and 6 months since manufacture or last overhaul, or before reaching 10 years. Installation of affected SIUs is only allowed if they are serviceable, and replacements must follow Airbus Helicopters Alert Service Bulletin H160-25-65-0004 instructions.
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