Sources & Hierarchy
Where the regulations come from and how they're organised.
The three sources
Aviationlex loads only official, up-to-date regulations from three authorities:
- EASA — European Union Aviation Safety Agency (Europe)
- FAA — Federal Aviation Administration (USA)
- DE — national German rules
The Library groups everything by these authorities and then thematically (for example FCL, OPS, SERA, ADR, UAS, ATCO, ATM/ANS).
How the hierarchy works
The category tree is curated centrally and published as the live structure — it isn't hard-coded in the app. You navigate from a top-level category down through chapters and articles to individual paragraphs. The structure you see in the Library is always the current published one and can differ per authority.
PDF vs structured text
When you open a regulation, the right-hand pane shows one of two things:
- The original PDF, when a published source document is available for that regulation — the authoritative, formatted text.
- Structured text, otherwise — the legal content assembled from its chapters, articles, and paragraphs so you can still read and search it.
In case of doubt the official original text always prevails (e.g. Part-FCL, ICAO Annexes). Aviationlex is for information and training, not certified legal advice.
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