Fuel System — Non-Conforming Installation of Electrical Bonding Jumpers
- Published
- Effective
- Deadline
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What to do
Affected operators must inspect specified wing stations within 6000 flight hours or 36 months from the effective date and remove or modify any non-conforming electrical bonding jumpers and brackets. Maintenance records must be reviewed within 60 days to confirm no prohibited tasks were performed, with re-inspections required if such tasks are found or cannot be ruled out. Additionally, operators must cease using certain maintenance manual tasks and task cards as specified in the directive from the effective date onward.
Summary
Canadian Airworthiness Directive CF-2020-01 addresses the non-conforming installation of electrical bonding jumpers on the fuel scavenge and vent lines of De Havilland Aircraft of Canada Limited models DHC-8-400, DHC-8-401, and DHC-8-402, serial numbers 4001, 4003, and subsequent. This directive mandates inspections and corrective actions to remove or modify these jumpers and brackets to prevent potential lightning strike induced fuel tank ignition. It also prohibits certain maintenance procedures that could lead to reinstallation of non-compliant bonding jumpers.
What changed
CF-2020-01 introduces mandatory inspections at specific wing stations for electrical bonding jumpers and brackets on the fuel scavenge and vent lines, requiring their removal or modification if found. It also enforces verification of maintenance records to ensure prohibited tasks have not been performed and bans the use of certain maintenance manual tasks and task cards that could result in non-compliant installations. This is a new directive aimed at mitigating safety risks associated with electrical bonding jumper installations.
Why it matters
This directive is critical for operators, maintenance organizations, and compliance teams as it addresses a safety risk that could lead to fuel tank ignition from lightning strikes. Ensuring compliance prevents potential catastrophic failures and aligns maintenance practices with regulatory safety standards. It also requires careful review of maintenance records and adherence to approved procedures, impacting maintenance planning and execution.
More for De Havilland Canada DHC-8
All 58- EASA AD CF-2026-47R1Wing – Wing Access Panels with Un-trimmed Stiffeners and/or Reduced Thickness - InspectionOct 13, 2026
- 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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