# Proposed AD FAA-2010-0700: Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-23-11
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 27, 2010, 75 FR 43882
- Comments due: September 10, 2010
- Became: [AD 2010-23-11](https://openairdocs.org/ad/2010-23-11)
- Docket: FAA-2010-0700 (https://www.regulations.gov/docket/FAA-2010-0700, where comments are filed)
- Project: 2010-NM-123-AD
- FR document: 2010-18291
- Official PDF: https://openairdocs.org/files/sha256/6b/98/6b9892b1d77f25c136781e4528fd1a29d27fe9b1ae628428a2d5b985b46bb989 (from https://www.govinfo.gov/content/pkg/FR-2010-07-27/pdf/2010-18291.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/07/27/2010-18291/airworthiness-directives-bombardier-inc-model-cl-600-2c10-regional-jet-series-700-701-and-702
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/606868889CFC3DFA8625776D005A8900.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0700

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

The manufacturer has informed Transport Canada that a certain number of the resolver stators, which were installed in the angle of attack (AOA) transducers, were not cleaned correctly. This condition can degrade the AOA transducer performance at low temperatures resulting in freezing of the AOA transducer resolver, which may provide inaccurate AOA data to the Stall Protection System (SPS). If not corrected, this condition can result in early or late activation of the stick shaker and/or stick pusher.

These conditions could result in reduced ability of the flight crew to maintain a safe flight and landing of the airplane. The proposed ADwould require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Jul 27, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-18291, comments due Sep 10, 2010 (https://www.federalregister.gov/documents/2010/07/27/2010-18291/airworthiness-directives-bombardier-inc-model-cl-600-2c10-regional-jet-series-700-701-and-702)

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