AD 2015-02-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
Unsafe Condition
Loose, broken, or backed-out spur gear bolts on the horizontal stabilizer trim actuator (HSTA), combined with failure of the primary load path, could lead to HSTA failure and subsequent loss of the airplane.
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Required Actions
Replace HSTAs with part number 604-92305-7 (vendor P/N 8454-3). Revise the airplane flight manual and maintenance or inspection program. Incorporate procedures for an Operational Test (BITE) of the Horizontal Stabilizer Trim Controls System (HSTCS).
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Compliance Time
Within 12 months of the effective date (March 6, 2015).
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Affected Aircraft
Bombardier, Inc. Model CL-600-2B16 (CL-604 Variant) airplanes with horizontal stabilizer trim actuator (HSTA) having part number 604-92305-5 (vendor P/N 8454-2).
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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