Time Limits / Maintenance Checks (TLMC) — TLMC Manual Revision to Introduce New or Revised Tasks Affecting the Main Landing Gear (MLG), Nose Landing Gear (NLG) and Pitch Trim Actuator
- Published
- Effective
- Deadline
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What to do
Affected operators must amend their Transport Canada-approved maintenance schedules within 60 days of the effective date to include the four specified task packages. Initial compliance with new or revised tasks must be completed before reaching the specified time limits or flight cycles, with some tasks requiring compliance at the next scheduled inspection or within 1500 flight hours or landings. Thereafter, tasks must be repeated at intervals defined in the applicable TLMC manuals or later approved revisions.
Summary
Canadian Airworthiness Directive CF-2023-65 mandates revisions to the Time Limits/Maintenance Checks (TLMC) manual for Bombardier BD-700-1A10 and BD-700-1A11 aircraft, serial numbers 9001 through 9879, 9998, and 60001 through 60065. The directive introduces new or revised maintenance tasks affecting the Main Landing Gear (MLG), Nose Landing Gear (NLG), and Pitch Trim Actuator. These changes are required to ensure continued airworthiness and safety of the affected aircraft models.
What changed
CF-2023-65 introduces new or revised TLMC tasks with updated intervals and scopes, including new life limits for specific MLG and NLG components, detailed inspections of shock strut axles and service door areas, and restoration tasks for the pitch trim actuator and NLG shock-strut assembly. The directive requires incorporation of four task packages into the approved maintenance schedule and mandates initial compliance within specified time limits or flight cycles.
Why it matters
This directive is critical for operators, maintenance organizations, and compliance teams to prevent unsafe conditions by adhering to mandatory airworthiness limitations. It ensures that critical landing gear and pitch trim actuator components are maintained or replaced before reaching unsafe wear or life limits. Non-compliance could lead to operational restrictions or safety risks during takeoff and flight.
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