# Proposed AD FAA-2012-0997: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-02-01
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 24, 2012, 77 FR 58787
- Comments due: November 8, 2012
- Became: [AD 2014-02-01](https://openairdocs.org/ad/2014-02-01)
- Docket: FAA-2012-0997 (https://www.regulations.gov/docket/FAA-2012-0997, where comments are filed)
- Project: 2012-NM-060-AD
- FR document: 2012-23432
- Official PDF: https://openairdocs.org/files/sha256/e2/14/e21454b3ea4c4256de361f4451c0ef71f7313899989f932caee2b41d8a9491d9 (from https://www.govinfo.gov/content/pkg/FR-2012-09-24/pdf/2012-23432.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/09/24/2012-23432/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5BF4D3A6FFB78C1486257A830051E581.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0997

## Summary

We propose to supersede an existing airworthiness directive (AD) that applies to certain Bombardier, Inc. 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. The existing AD currently requires repetitive inspections of the rudder travel limiter (RTL) return springs and primary actuator, and corrective actions if necessary. Since we issued that AD, terminating action has been developed which eliminates the need for the repetitive inspections. This proposed AD would require replacing certain RTL return springs, including doing related investigative and corrective actions, if necessary; and would also revise the applicability. We are proposing this AD to prevent failure of the RTL, which would permit an increase of rudder authority beyond normal structural limits and consequently affect the controllability of the airplane.

## Notices in this docket

- Sep 24, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-23432, comments due Nov 8, 2012 (https://www.federalregister.gov/documents/2012/09/24/2012-23432/airworthiness-directives-bombardier-inc-airplanes)

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