Cracking of the Nacelle Attachment Fitting(s)
- Published
- Effective
- Deadline
- Replaces
- CF-2010-30R1
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected De Havilland DHC-8-400 series aircraft must conduct detailed visual inspections and conductivity checks of nacelle attachment fittings within specified timeframes, replacing fittings if cracks or conductivity anomalies are found. The modification to replace the rear spar fitting with the new part number 8Z9305 must be completed within 8000 flight hours or 4 years, whichever comes first, to terminate repetitive inspections. Installation of the older fitting P/N 85414663 is prohibited after the effective date.
Summary
The Canadian Airworthiness Directive CF-2010-30R2 addresses cracking issues in the nacelle attachment fittings of De Havilland Aircraft of Canada Limited model DHC-8-400, -401, and -402 aeroplanes, serial numbers 4001 and subsequent. It mandates inspections and modifications to ensure structural integrity and safe landing operations. The directive applies to specific part numbers of nacelle attachment fittings and outlines inspection and replacement procedures.
What changed
CF-2010-30R2 revises the previous AD CF-2010-30R1 by adding a new Part III that requires modification of the rear spar fitting and nacelle attaching structure with a new nacelle attachment fitting (P/N 8Z9305) that eliminates the need for repetitive inspections. It also updates the serial number applicability based on production changes and clarifies compliance requirements for affected aircraft.
Why it matters
This directive is critical for aviation professionals as it addresses stress corrosion cracking that could compromise nacelle attachment fittings, potentially affecting aircraft safety during landing. Operators and maintenance teams must comply to prevent structural failures and ensure continued airworthiness. The modification provides a terminating action that reduces ongoing inspection burdens and enhances safety.
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- EASA AD CF-2026-38Maintenance Requirements Manual Part 2 - Airworthiness Limitation Items - AmendmentAug 17, 2026
- EASA AD CF-2026-37Time Limits / Maintenance Checks – Airworthiness Limitation Items – AmendmentAug 6, 2026
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