Electrical Power – Overhead Panel Wires Interference – Inspection / Modification
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected AB139 and AW139 helicopters must perform a detailed inspection inside the overhead panel within 150 flight hours or 12 months for Group 1 helicopters, and initial plus repetitive inspections for all groups within specified intervals. If discrepancies are found, corrective actions must be taken before the next flight. Group 1 helicopters must also modify the overhead panel assembly before the next flight after inspection. Inspection results with discrepancies must be reported to Leonardo within 30 days.
Summary
EASA Airworthiness Directive 2025-0094R2 is an updated regulatory requirement addressing electrical power overhead panel wire interference in Leonardo S.p.A. AB139 and AW139 helicopters. It mandates inspections and modifications to detect and correct potential interference and damage between electrical cables and connectors in the overhead panel, which could lead to fire and loss of helicopter control. The directive applies to specific serial number ranges of these helicopter models.
What changed
EASA Airworthiness Directive 2025-0094R2 revises the previous version 2025-0094R1 by refining the applicability to exclude additional serial numbers and limiting the affected helicopters to Long Nose configurations only. It updates group definitions and inspection requirements based on new information from Leonardo's Alert Service Bulletin 139-801 Revision A. These changes narrow the scope and clarify compliance obligations.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk that could cause electrical fires and loss of control in affected helicopters. Operators and maintenance organizations must ensure compliance to maintain airworthiness and avoid operational disruptions. The inspections and modifications help prevent costly damage and enhance flight safety by mitigating the risk of electrical cable interference in the overhead panel.
More for Leonardo S.P.A. Helicopters AB139
All 46- EASA AD 2020-0271R1Main Rotor – Swashplate Boot – InspectionOct 8, 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 — AmendmentJan 12, 2026
- EASA AD 2025-0163Rotors Flight Control — Brake Pedal Assembly — Inspection
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