# Proposed AD FAA-2011-1095: Bombardier, Inc. Model CL-600-2B16 (CL- 601-3A, CL-601-3R, and CL-604 Variants) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-08-15
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 26, 2011, 76 FR 66203
- Comments due: December 12, 2011
- Became: [AD 2012-08-15](https://openairdocs.org/ad/2012-08-15)
- Docket: FAA-2011-1095 (https://www.regulations.gov/docket/FAA-2011-1095, where comments are filed)
- Project: 2010-NM-241-AD
- FR document: 2011-27653
- Official PDF: https://openairdocs.org/files/sha256/15/69/15691135b5df6fd6aae3f1129bb57ef64d5d2387ff8dedc6e238ced509878400 (from https://www.govinfo.gov/content/pkg/FR-2011-10-26/pdf/2011-27653.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/10/26/2011-27653/airworthiness-directives-bombardier-inc-model-cl-600-2b16-cl-601-3a-cl-601-3r-and-cl-604-variants
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/256A5740BF31903F86257935006FD98F.0001
- Page: https://openairdocs.org/proposed/FAA-2011-1095

## 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:

During pre-delivery inspections and test flights, several short circuit events were reported, one of which resulted in smoke in the cockpit. There were no in-service incidents.

Investigations have identified three conditions affecting the wiring of Circuit Breaker Panels * * * and Junction Boxes * * *, which would lead to short circuiting:

* * * * *

If not corrected, these conditions could result in arcing, damage to adjacent structure, smoke in the cockpit, or loss of system redundancies.

* * * * *

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Oct 26, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-27653, comments due Dec 12, 2011 (https://www.federalregister.gov/documents/2011/10/26/2011-27653/airworthiness-directives-bombardier-inc-model-cl-600-2b16-cl-601-3a-cl-601-3r-and-cl-604-variants)

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