AD 2019-19-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
PCU rod end fractures due to pitting corrosion, which, if not detected and corrected, could lead to a disconnect between the PCU and the control surface, resulting in potential loss of the control surface function or inadequate flutter suppression.
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Required Actions
Revising the existing maintenance or inspection program, as applicable, to incorporate new maintenance tasks. Detailed inspections of the elevator PCU rod ends and applicable corrective actions. Prohibiting using certain aircraft maintenance manual tasks. Installing a new PCU if necessary.
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Compliance Time
Before further flight
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Affected Aircraft
Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440), CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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