Fire Protection — Starter Generator Air Ducts — Modification
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected EC 175 B helicopters must modify the starter generator air ducts by installing fire-proof parts as specified in Airbus Helicopters Alert Service Bulletin EC175-24-38-0001. This modification must be completed within 1,800 flight hours or 24 months from the AD's effective date of 22 April 2025, whichever occurs first.
Summary
EASA Airworthiness Directive 2025-0076 is issued for Airbus Helicopters EC 175 B models, addressing fire protection concerns related to the starter generator air ducts. The directive mandates modifications to the air ducts to enhance fire resistance and prevent potential fire persistence in the engine bay. This AD applies to all EC 175 B helicopters except those already modified with AH mod 99A06338.
What changed
This new Airworthiness Directive introduces a mandatory modification requiring replacement of certain parts of the left-hand and right-hand engine starter generator air ducts with fire-proof components. The modification is detailed in Airbus Helicopters Alert Service Bulletin EC175-24-38-0001 and aims to retrofit helicopters to meet enhanced fire safety standards.
Why it matters
This AD is critical for aviation professionals because it addresses a safety risk where non-fire-proof air duct parts could allow persistent engine fires, potentially leading to loss of helicopter control. Operators and maintenance teams must ensure compliance to maintain airworthiness and prevent hazardous situations during engine fires. Compliance also ensures adherence to European Union aviation safety regulations.
More for Airbus Helicopters EC175
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- EASA AD 2026-0110[Correction] Fuselage – Screws and Nuts installed on Firewalls – InspectionJun 10, 2026
- EASA AD 2026-0039Time Limits / Maintenance Checks — Airworthiness Limitations Section — AmendmentFeb 27, 2026
- EASA PAD 26-026
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