Time Limits/Maintenance Checks (TLMC) — Airworthiness Limitations (AWL)
- Published
- Effective
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What to do
Affected operators must complete the new or more restrictive maintenance tasks identified in Part 2 of the AWL section of the Bombardier TLMC manuals within the specified thresholds, repeat intervals, or discard times. Compliance must be achieved by the effective date of 13 December 2025. Operators should also ensure that any superseding Temporary Revisions or later approved revisions of the TLMC publications are followed to meet the directive's intent.
Summary
Airworthiness Directive CF-2025-58 is issued by Transport Canada and applies to Bombardier Inc. model BD-100-1A10 aeroplanes, specifically the Challenger 300 and Challenger 350 series. This directive mandates compliance with updated Time Limits/Maintenance Checks (TLMC) and Airworthiness Limitations (AWL) as published in Bombardier's TLMC manuals. It ensures that new or more restrictive maintenance tasks are performed to maintain the structural integrity and airworthiness of these aircraft.
What changed
CF-2025-58 introduces new and more restrictive maintenance tasks and limitations in Part 2 of the AWL section of the Challenger 300 and Challenger 350 TLMC publications. These changes include added tasks, reduced thresholds, repeat intervals, and discard times for certain maintenance actions. The directive requires operators to comply with these updated tasks within the specified intervals or discard times.
Why it matters
This directive is critical for aviation professionals because failure to perform the updated maintenance tasks could lead to undetected failures and potential loss of structural integrity of the aircraft. Operators, maintenance organizations, and compliance teams must ensure adherence to these more stringent requirements to maintain continued airworthiness and regulatory compliance. It helps prevent safety risks and supports regulatory oversight.
More for Bombardier BD-100
All 41- EASA AD CF-2025-42Flight Controls — Horizontal Stabilizer — Autopilot Inability to Trim Horizontal StabilizerAug 28, 2025
- EASA SIB CASA-2025-03Flight Controls — Unannunciated Loss of Ground Lift Dump Spoilers due to Faulty Throttle Quadrant AssemblyApr 9, 2025
- EASA AD CF-2024-38Flight Controls — Horizontal Stabilizer Trim Actuator (HSTA) — Incomplete OverhaulNov 15, 2024
- EASA AD CF-2024-17Time Limits/Maintenance Checks — Airworthiness LimitationsMay 24, 2024
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