# Airworthiness Directives; AQUILA-Aviation by Excellence AG Airplanes
> **Rule** · Final rule; request for comments · Published 2013-11-25 · Effective 2013-12-30 · 78 FR 70200
## Document
- **Document number:** 2013-27914
- **Category:** airworthiness
- **Manufacturer:** AQUILA-Aviation by Excellence AG
- **Type:** Rule
- **Action:** Final rule; request for comments
- **Citation:** 78 FR 70200
- **Publication date:** 2013-11-25
- **Effective date:** 2013-12-30
- **FAA docket:** Docket No. FAA-2013-0963
## Abstract

We are adopting a new airworthiness directive (AD) AQUILA-- Aviation by Excellence AG Model AT01 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a defective sealing of a tapped through bore hole at the inside of the fuel tank openings in combination with prolonged periods at maximum fuel level. 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/2013/11/25/2013-27914/airworthiness-directives-aquila-aviation-by-excellence-ag-airplanes)
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