Tail Rotor – Tail Rotor Blade – Service Life Limit Amendment / Replacement
Proposal for consultation. Not binding until EASA issues the final AD; the requirements can still change.
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of EC 175 B helicopters with affected tail rotor blades must replace these blades before they reach 9,000 flight hours or within 50 flight hours after the directive's effective date, whichever is later. Installation of affected blades is permitted only if they will be replaced before reaching 9,000 flight hours. Stakeholders should refer to Airbus Helicopters Alert Service Bulletin EC175-64-11-0001 for detailed instructions.
Summary
EASA Airworthiness Directive Proposal 26-090 is a regulatory document addressing the tail rotor blade service life limit for Airbus Helicopters EC 175 B models. It applies to all serial numbers of EC 175 B helicopters and focuses on tail rotor blades with part number M641A1001104. The directive proposes an amendment to the service life limit of these tail rotor blades based on new flight load assessments.
What changed
This proposed directive reduces the service life limit of affected tail rotor blades from 10,000 flight hours to 9,000 flight hours. It introduces mandatory replacement requirements for these blades before reaching the new limit to prevent potential blade rupture. Additionally, it allows installation of affected parts only if they are replaced before accumulating 9,000 flight hours.
Why it matters
This change is critical for aviation professionals as exceeding the new service life limit could lead to tail rotor blade failure and possible loss of helicopter control. Operators and maintenance teams must update their maintenance schedules and parts management to comply with the reduced fatigue life. Compliance ensures continued airworthiness and safety of EC 175 B helicopters.
More for Airbus Helicopters EC175
All 73- EASA AD 2026-0179Tail Rotor – Tail Rotor Blade – Service Life Limit Amendment / ReplacementSep 18, 2026
- 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 26-026Equipment / Furnishings — Personal Locator Beacons installed on Emergency Life-Rafts — Operational CheckFeb 9, 2026
- EASA AD 2026-0022-E
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