# Airworthiness Directives; Viking Air Limited Airplanes
> **Rule** · Final rule. · Published 2018-10-24 · Effective 2018-11-28 · 83 FR 53567
## Document
- **Document number:** 2018-23106
- **Category:** airworthiness
- **Manufacturer:** Viking Air Limited
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 53567
- **Publication date:** 2018-10-24
- **Effective date:** 2018-11-28
- **FAA docket:** Docket No. FAA-2018-0189
## Abstract

We are adopting a new airworthiness directive (AD) for Viking Air Limited Model DHC-3 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as pitting corrosion on the shank of the wing strut attach bolts. We are issuing this AD to require actions to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/10/24/2018-23106/airworthiness-directives-viking-air-limited-airplanes)
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