# Airworthiness Directives; Bombardier, Inc. Airplanes
> **Rule** · Final rule. · Published 2013-08-06 · Effective 2013-09-10 · 78 FR 47529
## Document
- **Document number:** 2013-18488
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 47529
- **Publication date:** 2013-08-06
- **Effective date:** 2013-09-10
- **FAA docket:** Docket No. FAA-2013-0216
## Abstract

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by a determination that certain flap actuators require restoration by installing a redesigned flap actuator inboard pinion seal. This AD requires revising the maintenance program by incorporating new airworthiness limitation tasks. We are issuing this AD to prevent flap system failure, and consequent reduced control of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/08/06/2013-18488/airworthiness-directives-bombardier-inc-airplanes)
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