# Proposed AD 97-NM-48-AD: Bombardier Model CL-600-2B19 (Regional Jet Series 100) Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 97-19-11
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 15, 1997, 62 FR 18302
- Comments due: May 23, 1997
- Became: [AD 97-19-11](https://openairdocs.org/ad/97-19-11)
- Docket: 97-NM-48-AD
- FR document: 97-9594
- Official PDF: https://openairdocs.org/files/sha256/72/08/7208510ed1037b91bb4939a72a7249f06a5bf18a341028bb6295b4710263bf1a (from https://www.govinfo.gov/content/pkg/FR-1997-04-15/pdf/97-9594.pdf)
- Federal Register: https://www.federalregister.gov/documents/1997/04/15/97-9594/airworthiness-directives-bombardier-model-cl-600-2b19-regional-jet-series-100-series-airplanes
- Page: https://openairdocs.org/proposed/97-NM-48-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Bombardier Model CL-600-2B19 series airplanes. That AD currently requires revising the Limitations Section of the Airplane Flight Manual (AFM) to provide the flight crew with procedures to check the travel range of the aileron. It also requires inspection for damage of the shear pins of the aileron flutter damper and aileron hinge fittings, and various follow-on actions. This action would add a requirement for accomplishment of an installation that eliminates the need for the AFM revision. This action also would add airplanes to the applicability of the existing AD. This proposal is prompted by reports of failure of shear pins in the aileron flutter damper. The actions specified by the proposed AD are intended to prevent damage to the aileron hinge fittings due to failed shear pins, and consequent reduced controllability of the airplane.

## Notices in this docket

- Apr 15, 1997: Notice of proposed rulemaking (NPRM). (first notice), FR document 97-9594, comments due May 23, 1997 (https://www.federalregister.gov/documents/1997/04/15/97-9594/airworthiness-directives-bombardier-model-cl-600-2b19-regional-jet-series-100-series-airplanes)

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