Aviation Regulatory Library
The Aviation Regulation Library contains the up to date consolidation of the individual Regulations, Acceptable Means of Compliance (AMC), Guidance Material (GM) and, where appropriate, Certification Specifications (CS).
This consolidated material is available in two formats, as a webpage, with expandable elements of the regulation, AMC, GM and CS, and a PDF document, which sets out regulation with corresponding AMC, GM and CS in sequential order.
UK Reg (EU) 2018/1139 (the UK Basic Regulation)
- UK Basic Regulation, UK Regulation (EU) 2018-1139 last amended 01 December 2025
UK Reg (EU) No. 3922/91 (the UK Technical and Administrative Harmonisation Regulation)
- Law 3922/91 last amended 01 January 2021
Web Browser Compatibility for Viewing the Aviation Regulatory Library
On some web browsers the numbering of paragraphs in the web version of the Aviation Regulatory Library displays incorrectly.
The Aviation Regulatory Library uses various levels of paragraph numbering such as:
- a, b, c, …
- 1, 2, 3, …
- i, ii, iii, …
- A, B, C, …
Web browsers which display incorrectly show every level of numbering as 1, 2, 3, … - an example is shown below.
If the numbering displays incorrectly you should try using a different web browser or view the pdf version instead.
The following browsers should display the numbering correctly:
- Google Chrome
- Mozilla Firefox
- Microsoft Edge
- Internet Explorer 11 and newer
The following browsers are known to display the numbering incorrectly:
- Safari
- DuckDuckGo
Web Browser Compatibility Examples
An example of the incorrectly displayed numbering is:
The above text should display as:
