# Proposed AD FAA-2005-22627: Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A and CL-601-3R) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-26-04
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 6, 2005, 70 FR 58355
- Comments due: November 7, 2005
- Became: [AD 2005-26-04](https://openairdocs.org/ad/2005-26-04)
- Docket: FAA-2005-22627 (https://www.regulations.gov/docket/FAA-2005-22627, where comments are filed)
- Project: 2005-NM-156-AD
- FR document: 05-20065
- Official PDF: https://openairdocs.org/files/sha256/ce/9e/ce9ef5f8d82ab8b8b8da3f033bbe4b9bb881e51a85e85fd9689b16f6feabb544 (from https://www.govinfo.gov/content/pkg/FR-2005-10-06/pdf/05-20065.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/10/06/05-20065/airworthiness-directives-bombardier-model-cl-600-1a11-cl-600-cl-600-2a12-cl-601-and-cl-600-2b16
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E9ACEB21716F5E8D862570920058E4D5.0001
- Page: https://openairdocs.org/proposed/FAA-2005-22627

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL- 601), and CL-600-2B16 (CL-601-3A and CL-601-3R) airplanes. This proposed AD would require measuring to detect migration of the lower gimbal pin and inspecting for other discrepancies of the horizontal stabilizer trim actuator (HSTA). This proposed AD also would require replacing or modifying the HSTA, as applicable. This proposed AD results from reports of failure of the lower gimbal pin of the HSTA. We are proposing this AD to prevent migration of the lower gimbal pin of the HSTA, which could result in loss of the horizontal stabilizer and consequent loss of control of the airplane.

## Notices in this docket

- Oct 6, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-20065, comments due Nov 7, 2005 (https://www.federalregister.gov/documents/2005/10/06/05-20065/airworthiness-directives-bombardier-model-cl-600-1a11-cl-600-cl-600-2a12-cl-601-and-cl-600-2b16)

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