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 of the overhead panel wiring within 150 flight hours or 12 months for Group 1 helicopters, and within 300 flight hours or 12 months for Group 2 helicopters. Any discrepancies found must be corrected before the next flight, and Group 1 helicopters require modification of the overhead panel before further flight. Repetitive inspections must continue every 300 flight hours or 12 months thereafter. Inspection results must be reported to Leonardo within 30 days if discrepancies are found.
Summary
EASA Airworthiness Directive 2025-0094R1 is issued for Leonardo S.p.A. AB139 and AW139 helicopters, addressing interference issues between electrical cables and connectors in the overhead panel. The directive mandates inspections and modifications to prevent potential cable damage that could lead to fire and loss of helicopter control. It applies to all serial numbers from 31201 onward, focusing on Long Nose helicopter configurations.
What changed
This revision of EASA AD 2025-0094 updates the applicability and group definitions to limit the affected helicopters to those with Long Nose configurations. It incorporates Leonardo's Alert Service Bulletin 139-801 Revision A, which narrows the scope of the unsafe condition and modifies inspection and modification requirements accordingly.
Why it matters
This directive is critical for operators and maintenance organizations to prevent electrical cable damage that could cause fire hazards and compromise flight safety. Compliance ensures continued airworthiness and regulatory adherence, reducing the risk of in-flight emergencies related to overhead panel wiring. It also clarifies which helicopter configurations require action, optimizing maintenance efforts and resource allocation.
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 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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New ADs and bulletins for Leonardo S.P.A. Helicopters AB139, S.P.A. Helicopters AW139, AB139 and AW139, summarized like this page, every Monday.