AD 95-17-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-600-1A11 (CL-600) | Airworthiness Directives; Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A and -3R) Series Airplanes |
| aircraft | Bombardier Inc. | CL-600-2A12 (CL-601) | Airworthiness Directives; Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A and -3R) Series Airplanes |
| aircraft | Bombardier Inc. | CL-600-2B16 (CL-601-3A) | Airworthiness Directives; Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A and -3R) Series Airplanes |
| aircraft | Bombardier Inc. | CL-600-2B16 (CL-601-3R) | Airworthiness Directives; Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A and -3R) Series Airplanes |
Unsafe Condition
Failure of the no-back device on the horizontal stabilizer trim actuator (HSTA) to operate properly at low temperatures, leading to uncommanded movement of the HSTA and potential adverse effects on airplane controllability.
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Required Actions
Conduct functional testing of the HSTA brake, exercise the pitch trim system, revise the FAA-approved Airplane Flight Manual (AFM) Limitations Section, perform operational testing of the HSTA, and replace the HSTA or horizontal stabilizer trim control unit (HSTCU) if necessary, following applicable Alert Service Bulletins.
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Compliance Time
Before further flight
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Affected Aircraft
Bombardier Model CL-600-1A11 (CL-600) series airplanes with serial numbers 1004 through 1085; CL-600-2A12 (CL-601) series with serial numbers 3001 through 3066; and CL-600-2B16 (CL-601-3A and -3R) series with serial numbers 5001 through 5137 and 5139 through 5299.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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