Fuel — Fouling Condition between Fuel Scupper Attachment Bolt and Wire Harness
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Bombardier CL-600-2B16 aircraft with serial numbers 5775 through 5990 and 6050 through 6178 must perform a visual inspection of the electrical wires behind the fuel scupper within 48 months from August 1, 2023. If wires are damaged, repair them before further flight and remove one fuel scupper attachment bolt as specified in the applicable Bombardier Service Bulletin. If no damage is found, reinstall the fuel scupper per the service instructions before further flight.
Summary
Canadian Airworthiness Directive CF-2023-55 addresses a fuel system safety issue on Bombardier Inc. CL-600-2B16 aircraft, specifically serial numbers 5775 through 5990 and 6050 through 6178. The directive requires inspection and potential repair of electrical wires near the fuel scupper attachment bolts to prevent sparking during refueling. This AD aims to eliminate fire hazards caused by electrical sparks generated from wire insulation damage due to contact with fuel scupper bolts.
What changed
CF-2023-55 introduces a new regulatory requirement mandating a visual inspection of electrical wires behind the fuel scupper and removal of one fuel scupper attachment bolt if necessary. It also requires repair of any damaged wires found during inspection. This directive is a newly issued safety measure rather than an amendment to a previous AD.
Why it matters
This directive is critical for operators and maintenance organizations to prevent potential fire hazards during refueling caused by electrical sparks. Compliance ensures continued airworthiness and safety of affected Bombardier Challenger 605 and 650 aircraft. It also helps maintenance teams identify and rectify wiring issues that could compromise fuel system safety.
More for Bombardier CL-600 (Challenger)
All 47- EASA AD CF-2026-41Time Limits/Maintenance Checks – Airworthiness Limitations – AmendmentAug 24, 2026
- EASA AD CF-2025-51R1Flight Controls — Uncommanded and Unarrested Flap MovementDec 2, 2025
- EASA AD CF-2025-36Fuselage, Stabilizers, Wings, Exhaust SystemJul 9, 2025
- EASA AD CF-2025-06Auxiliary Power Unit (APU) — APU Muffler Drainage Blockage Causing Fuel Leakage AccumulationJan 27, 2025
- EASA AD CF-2025-05Landing Gear — Uncommanded Steering
Get the next one by email
New ADs and bulletins for Bombardier CL-600 (Challenger) and CL-600-2B16, summarized like this page, every Monday.