# Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100) Series Airplanes
> **Rule** · Final rule; request for comments. · Published 1998-09-17 · Effective 1998-10-02 · 63 FR 49661
## Document
- **Document number:** 98-24905
- **Category:** airworthiness
- **Manufacturer:** Bombardier Model CL-600-2B19 (Regional Jet Series 100) Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 63 FR 49661
- **Publication date:** 1998-09-17
- **Effective date:** 1998-10-02
- **FAA docket:** Docket No. 98-NM-236-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Bombardier Model CL-600-2B19 (Regional Jet Series 100) series airplanes. This action requires revising the Airplane Flight Manual (AFM) to provide the flight crew with revised procedures for checking the flap system. This AD also requires revising the maintenance program to provide procedures for checking the flap system, and performing follow-on actions, if necessary. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent an unannunciated failure of the flap system, which could result in a flap asymmetry, and consequent reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/09/17/98-24905/airworthiness-directives-bombardier-model-cl-600-2b19-regional-jet-series-100-series-airplanes)
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