Stabilizers — Elevator Power Control Unit (PCU) Bracket and Elevator Front Spar Cracks
- Published
- Effective
- Replaces
- 2024-10
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected DHC-8-401 and DHC-8-402 aeroplanes must complete the required inspections and modifications within 8000 flight hours or 48 months from April 7, 2025, whichever occurs first. Compliance involves following specific service bulletins tailored to aircraft serial number groups and implementing the new design solutions. Completion of these actions also terminates previous inspection requirements mandated by AD CF-2024-10.
Summary
Canadian Airworthiness Directive CF-2025-19 addresses cracks found in the Elevator Power Control Unit (PCU) bracket and elevator front spar on De Havilland Aircraft of Canada Limited DHC-8-401 and DHC-8-402 aeroplanes, specifically serial numbers 4001 and 4003 through 4633. The directive mandates inspections and modifications to prevent elevator jamming and potential loss of pitch control. It includes updated design solutions and inspection procedures to enhance structural integrity of the horizontal stabilizer and elevator assemblies.
What changed
CF-2025-19 introduces a new design solution involving replacement of PCU fittings, installation of bushings and doublers, and additional inspection requirements for affected aircraft. It supplements the previous AD CF-2024-10 by requiring implementation of these new corrective actions and terminating certain prior inspection requirements. The directive also specifies different compliance procedures based on aircraft serial number ranges.
Why it matters
This directive is critical for maintaining flight safety by addressing structural cracks that could lead to elevator jamming and loss of pitch control. Operators and maintenance organizations must comply to avoid potential in-flight control failures. The updated inspections and modifications ensure continued airworthiness and regulatory compliance for affected DHC-8-400 series aircraft.
More for De Havilland Canada DHC-8
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- EASA AD CF-2026-47Wing – Wing Access Panels with Un-trimmed Stiffeners and/or Reduced ThicknessSep 28, 2026
- 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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