# Primary Category Airworthiness Design Standards; Vertical Aviation Technologies (VAT) Model S-52L Rotorcraft
> **Rule** · Issuance of final airworthiness design standards. · Published 2018-12-21 · Effective 2019-01-22 · 83 FR 65485
## Document
- **Document number:** 2018-27566
- **Category:** other
- **Type:** Rule
- **Action:** Issuance of final airworthiness design standards.
- **Citation:** 83 FR 65485
- **Publication date:** 2018-12-21
- **Effective date:** 2019-01-22
## Abstract

These airworthiness design standards are issued to Vertical Aviation Technologies (VAT) for certification of the Model S-52L rotorcraft under the regulations for primary category aircraft.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/12/21/2018-27566/primary-category-airworthiness-design-standards-vertical-aviation-technologies-vat-model-s-52l)
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