Electrical Power — Overhead Panel Wires Interference — Inspection / Modification
Superseded. Comply with 2025-0094R1, which replaces this document.
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Leonardo AB139 and AW139 helicopters must perform a one-time detailed inspection within 150 flight hours or 12 months for Group 1 helicopters, and initial inspections within 300 flight hours or 12 months for Group 2 helicopters. Repetitive inspections must then be conducted every 300 flight hours or 12 months. If any discrepancies are found, corrective actions and modifications must be completed before the next flight. Inspection results with discrepancies must be reported to Leonardo within 30 days.
Summary
EASA Airworthiness Directive 2025-0094 is an official regulatory document addressing electrical power system safety on Leonardo S.p.A. AB139 and AW139 helicopters. It mandates inspections and modifications to the overhead panel wiring to prevent interference between cables and connectors that could lead to cable damage, fire, and loss of helicopter control. The directive applies to all serial numbers of these helicopter models.
What changed
This new Airworthiness Directive introduces mandatory initial and repetitive detailed inspections of the overhead panel wiring harnesses and connectors, along with required modifications for certain helicopters to eliminate interference issues. It also establishes corrective actions to be taken if discrepancies are found during inspections. No previous AD is superseded by this directive.
Why it matters
This directive is critical for aviation professionals as it addresses a potential fire hazard caused by electrical cable interference in the overhead panel, which could compromise helicopter safety and control. Operators and maintenance organizations must comply to ensure continued airworthiness and prevent in-flight emergencies. Compliance teams need to track inspection intervals and corrective actions to meet regulatory requirements.
More for Leonardo S.P.A. Helicopters AB139
All 46- EASA AD 2020-0271R1Main Rotor – Swashplate Boot – InspectionOct 8, 2026
- EASA AD 2025-0094R2Electrical Power – Overhead Panel Wires Interference – Inspection / ModificationAug 26, 2026
- EASA AD 2026-0165Engine Exhaust – Nozzle Exhaust Duct Clamp Assembly – InspectionAug 18, 2026
- EASA AD 2025-0094R1Electrical Power – Overhead Panel Wires Interference – Inspection / ModificationJul 3, 2026
- EASA AD 2026-0003Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment
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New ADs and bulletins for Leonardo S.P.A. Helicopters AB139 and S.P.A. Helicopters AW139, summarized like this page, every Monday.