# Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes
> **Rule** · Final rule. · Published 2003-08-18 · Effective 2003-09-22 · 68 FR 49336
## Document
- **Document number:** 03-20711
- **Category:** airworthiness
- **Manufacturer:** Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440)
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 49336
- **Publication date:** 2003-08-18
- **Effective date:** 2003-09-22
- **FAA docket:** Docket No. 2001-NM-328-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, that requires installing new vent tube assemblies for the main fuel tanks; and, on certain airplanes, inspecting to measure the clearance between the vent system tubing and the applicable wing ribs, and corrective action if necessary. This action is necessary to prevent a fire hazard due to fuel spillage. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/08/18/03-20711/airworthiness-directives-bombardier-model-cl-600-2b19-regional-jet-series-100-and-440-airplanes)
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