AD 78-23-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-44D4 | Airworthiness Directives; CANADAIR CL-44D4 and CL-44J Airplanes |
| aircraft | Bombardier Inc. | CL-44J | Airworthiness Directives; CANADAIR CL-44D4 and CL-44J Airplanes |
Unsafe Condition
Spline wear on elevator travel due to wear on the elevator resilient stop mechanism at spanwise stations 43 and 178.
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Required Actions
Visually inspect each elevator resilient stop mechanism at spanwise stations 43 and 178 for wear in accordance with Canadair SIC 406-CL44 or equivalent. Repair or replace worn parts with same part number and install per Canadair CL-44 Overhaul Manual Chapter 55-20-2 or equivalent.
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Compliance Time
Within the next 100 hours in service after the effective date, unless already accomplished within the last 900 hours in service, and thereafter at intervals not to exceed 1000 hours in service.
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Affected Aircraft
Bombardier Inc. CL-44D4 and CL-44J airplanes, certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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