AD 2009-22-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier 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 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
The heating capability of several angle of attack (AOA) transducer heating elements removed from in-service aircraft has been found to be below the minimum requirement. Also, a large number of AOA transducers repaired in an approved maintenance facility were not calibrated accurately.
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Required Actions
Inspect the inrush current to verify the AOA heating capability. Replace inaccurately calibrated AOA transducers. Follow the actions described in Bombardier Service Bulletin 670BA-27-051.
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Compliance Time
Before further flight
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Affected Aircraft
Bombardier 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, equipped with Thales angle of attack (AOA) transducers having part number C16258AA.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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