# Airworthiness Directives; Bombardier Model DHC-8-400, -401, and -402 Airplanes
> **Rule** · Final rule. · Published 2003-12-18 · Effective 2004-01-22 · 68 FR 70434
## Document
- **Document number:** 03-31062
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 70434
- **Publication date:** 2003-12-18
- **Effective date:** 2004-01-22
- **FAA docket:** Docket No. 2002-NM-78-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Bombardier Model DHC-8-400, -401, and -402 airplanes, that requires a one-time inspection of the forward engine mount assemblies on the left and right engine nacelles for installation of pre-production engine mount assemblies, and follow-on corrective actions if necessary. This action is necessary to prevent failure of the forward engine mount, which could result in reduced structural integrity of the nacelle and engine support structure. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/12/18/03-31062/airworthiness-directives-bombardier-model-dhc-8-400--401-and--402-airplanes)
---
*AI Analytics · CC0 1.0*