# Airworthiness Directives; Bombardier, Inc. Airplanes
> **Rule** · Final rule. · Published 2014-12-12 · Effective 2015-01-16 · 79 FR 73808
## Document
- **Document number:** 2014-28923
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 79 FR 73808
- **Publication date:** 2014-12-12
- **Effective date:** 2015-01-16
- **FAA docket:** Docket No. FAA-2013-1029
## Abstract

We are superseding Airworthiness Directive (AD) 2010-13-04 for certain Bombardier, Inc. Model DHC-8-400 series airplanes. AD 2010-13- 04 required modifying the nose landing gear (NLG) trailing arm. This new AD requires installing a new pivot pin retention mechanism. This new AD also adds airplanes to the applicability. This AD was prompted by a report of several missing or damaged pivot pin retention bolts. We are issuing this AD to prevent failure of the pivot pin retention bolt, which could result in a loss of directional control or loss of a NLG tire during take-off or landing.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/12/12/2014-28923/airworthiness-directives-bombardier-inc-airplanes)
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