AD 2011-03-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) Airplanes, Model CL-600-2D15 (Regional Jet Series 705) Airplanes, and Model CL-600-2D24 (Regional Jet Series 900) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) Airplanes, Model CL-600-2D15 (Regional Jet Series 705) Airplanes, and Model CL-600-2D24 (Regional Jet Series 900) Airplanes |
Unsafe Condition
Rudder Travel Limiter (RTL) return spring, part number E0650-069-2750S, failed prior to endurance test. Replacement RTL return spring, P/N 670-93465-1, is susceptible to chafing on the primary actuator, leading to dormant spring failure. If both springs fail, RTL components could mechanically disconnect, resulting in unannounced RTL failure and increased rudder authority beyond normal limits, affecting controllability with strong rudder input.
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Required Actions
Perform a detailed inspection of the RTL for broken return springs and damage/chafing on the primary actuator. Replace broken return springs with new ones. Repair or replace chafed/damaged primary actuators. Repeat inspections at intervals not exceeding 6,000 flight hours.
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Compliance Time
Within 2,000 flight hours after the effective date for airplanes with over 4,000 flight hours as of the effective date. Before accumulation of 6,000 total flight hours for airplanes with 4,000 or fewer flight hours as of the effective date.
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Affected Aircraft
Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10003 and subsequent; Model CL-600-2D15 (Regional Jet Series 705) and Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 and subsequent.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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