# Airworthiness Directives; Bombardier, Inc. Airplanes
> **Rule** · Final rule. · Published 2015-03-23 · Effective 2015-04-27 · 80 FR 15149
## Document
- **Document number:** 2015-05033
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 80 FR 15149
- **Publication date:** 2015-03-23
- **Effective date:** 2015-04-27
- **FAA docket:** Docket No. FAA-2014-0752
## Abstract

We are superseding Airworthiness Directive (AD) 2014-06-08 for certain Bombardier, Inc. Model DHC-8-100, -200, and -300 series airplanes. AD 2014-06-08 required repetitive functional checks of the nose and main landing gear, and corrective actions if necessary; and also provided optional terminating action modification for the repetitive functional checks. This new AD requires a terminating action modification. This AD was prompted by a report that the emergency downlock indication system (EDIS) had given a false landing gear down- and-locked indication and a determination that a terminating action modification is necessary to address the identified unsafe condition. We are issuing this AD to detect and correct a false down-and-locked landing gear indication, which, on landing, could result in possible collapse of the landing gear.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/03/23/2015-05033/airworthiness-directives-bombardier-inc-airplanes)
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