Regulatory AI
Cited answers to aviation-regulation questions.
Regulatory AI Intelligence answers aviation-regulation questions from the rule text and hands you the passages behind the answer — across FAA, EASA, the UK and 2-REG. The assistant is called Chuck.
How do alcohol limits for flight crew differ between the FAA, EASA and the UK?
Chuck
- FAA — no alcohol within 8 hours of flight, and a blood-alcohol concentration below 0.04%.114 CFR 91.17
- EASA — no duty within 8 hours of consuming alcohol; blood-alcohol limit 0.2 g/L.2CAT.GEN.MPA.170
- UK — a prescribed limit of 20 mg of alcohol per 100 ml of blood, one quarter of the general driving limit.3ANO 2016, art. 91
All three set an 8-hour floor and a low BAC ceiling; the UK and EASA limits are stricter than the FAA’s.
Meet Chuck
A regulatory assistant that shows its working.
Chuck is CitadelAero’s managed AI, reading a curated corpus of aviation regulation rather than the open web. It answers from the rule text, cites what it used, and tells you when the corpus does not cover your question.
The citation comes with the answer
Not a footnote you can go and look up — the rule reference, the source document, and the passage the answer was built from, alongside the answer itself. You can check the wording before you act on it, which is the only basis on which anyone should act on it.
Cite or refuse
Where the corpus does not support an answer, Chuck says so. No confident-sounding regulation that does not exist. The failure mode is an honest “not found”, which is a great deal more useful than a fabricated reference you discover in an audit.
Amendment-aware
Regulations move. Each cited passage records the revision or amendment it belongs to, so an answer tells you not only what the rule says but which version of it you are reading.
Multi-jurisdiction by design
Ask once and see how the answer differs between the frameworks you actually operate under — which is the question most multi-registry fleets are really asking.
Sequence
Ask, retrieve, check.
- 01
Ask in plain language
“Do I have to report this occurrence, and to whom?” No rule numbers, no boolean syntax. Ask it the way you would ask a colleague across the desk.
- 02
Chuck retrieves the rules
The question is matched against the corpus for the frameworks your organisation is entitled to, pulling the passages that actually bear on it rather than the ones that share its vocabulary.
- 03
Read the answer beside its sources
Each cited passage appears in the Sources panel, weighted by how much it informed the answer and dated to its amendment. Follow any citation back to the original text.
Post-holders
Five people, one rulebook, five different questions.
- Compliance & Regulatory
- Trace a requirement to its source, compare frameworks, and assemble the regulatory basis for a compliance statement without trawling PDFs.
- Flight Operations
- Settle operational questions — limitations, minima, carriage and crew requirements — against the rule text that applies to your operation rather than to somebody's.
- Safety & SMS
- Check occurrence reportability, mandatory-reporting timelines, and the SMS obligations behind a finding, with the citation to back the call.
- Airworthiness & CAMO
- Maintenance, continuing-airworthiness and release-to-service requirements, and how the equivalent rule reads in another framework.
- Crew Training & Licensing
- Licensing, recency and training requirements, and what changes when crew or aircraft move between jurisdictions.
In use
What operators put it to.
- Requirement gap analysisWork through a requirement set clause by clause, with the source text next to each one.
- Occurrence-reportability checksWhether an occurrence is reportable, under which provision, to which authority, and inside what deadline.
- Procedure & document draftingDraft manual sections with the governing requirement cited alongside, so a reviewer can see the basis for every line.
- Cross-framework comparisonThe FAA, EASA, UK and 2-REG treatments of the same subject, side by side.
- Audit supportAnswer the auditor's question with the citation attached — and rehearse the requirements beforehand.
Data residency
Your data at rest in the UK and the EU.
Where your documents live and where a question gets answered are two different things. Worth stating as two, because they are not the same claim.
- Data at rest
- The United Kingdom and the European Union. The documents you upload, the regulation corpus, the search index built over it, and your account data are stored on our own infrastructure in the UK. Encrypted off-site backups are held in the EU, in Amsterdam, and are encrypted before they leave our server.
- AI inference
- The European Union. The question you ask, and the passages retrieved to answer it, are sent to our model provider for the length of the request, encrypted in transit, through a geographic inference profile that keeps the request inside the EU region set. Neither is used to train AI models. The sub-processors page names the provider and the region.
Access
Licensed per seat, with the frameworks you operate under.
One seat for each person putting questions to Chuck, from 3 seats up, with a regulation library included on every plan. Bring us the questions your team looks up most often and we will run them in front of you.