Definition
FAI is an initialism with more than one legal meaning. In legal contexts, the term most commonly refers to:
1. Fatal Accident Inquiry. A formal judicial or quasi-judicial proceeding convened to investigate the circumstances of a death, particularly deaths occurring in workplace settings, custody, or other circumstances where public interest in the cause and manner of death is heightened. Fatal Accident Inquiries are associated primarily with the Scottish legal system, where they are governed by statute and presided over by a sheriff. The inquiry examines how the death occurred, whether precautions could have prevented it, and whether any systemic deficiencies contributed to the outcome. An FAI does not determine criminal liability or civil fault but produces findings and recommendations of public record.
2. Free Androgen Index. A clinical calculation used in medical and forensic legal contexts — particularly in personal injury, employment discrimination, and disability litigation — to measure hormone levels relevant to health assessments. Less commonly encountered as a standalone legal term; appears primarily in evidentiary and expert witness contexts.
3. Friendly Artificial Intelligence. An emerging term in technology law, AI governance scholarship, and regulatory commentary referring to AI systems designed with human-aligned values and safety constraints. As of the time of this entry, FAI in this sense has not acquired a fixed legal definition but appears in policy documents, academic commentary, and legislative drafts addressing AI regulation.
Common Language
Modern common usage (Wiktionary): FAI appears in general usage as an initialism for "free androgen index," "friendly artificial intelligence," and "fatal accident enquiry," with no single dominant meaning in ordinary English.
Historical common usage (Webster's 1913): Not recorded. The term postdates Webster's 1913 in all three of its modern senses.
Editorial note: The ordinary English uses of FAI map closely onto its legal uses without significant semantic drift. The critical research trap is disambiguation: the same three-letter abbreviation functions in entirely different legal domains, and context — jurisdiction, practice area, document type — is the only reliable guide to meaning.
Recognized Forms
/SUBTYPES
Under Scottish law, Fatal Accident Inquiries divide into two categories:
Mandatory FAI: Required by statute in cases involving deaths in the workplace or deaths in custody, regardless of whether any wrongdoing is suspected.
Discretionary FAI: Convened at the Lord Advocate's direction when it appears to be in the public interest, covering deaths not automatically triggering mandatory inquiry.
Why It Matters in Research
Researchers encountering FAI in legal texts must first establish which meaning is operative. A Scottish practitioner's memorandum and a biomedical expert report may each use FAI without any disambiguation signal.
For fatal accident inquiries specifically: the Scottish statutory framework has been revised over time. The Inquiries into Fatal Accidents and Sudden Deaths etc. (Scotland) Act 2016 replaced the older Fatal Accidents and Sudden Deaths Inquiry (Scotland) Act 1976, expanding the sheriff's powers and updating procedural rules. Materials predating 2016 reflect the older regime; findings and procedural references from that era may not map cleanly onto current practice. Researchers using Law Mind corpus materials should note the legislative cutover when assessing whether a procedural description remains current.
FAI findings are not binding in subsequent civil or criminal proceedings but are frequently tendered as evidence and carry persuasive weight. The distinction between an FAI and a Fatal Accident Inquiry in other jurisdictions (such as coroners' inquests in England and Wales) matters for comparative research: the Scottish FAI is sheriff-court based, while the English inquest operates through a separate coronial system. Do not assume procedural equivalence when working across jurisdictions.
For Free Androgen Index: this term surfaces in personal injury and employment discrimination records as part of expert medical evidence. Researchers should treat it as a technical clinical term requiring medical literature support rather than legal definition.
For Friendly Artificial Intelligence: the term is in flux. Regulatory documents may use FAI inconsistently or interchangeably with adjacent concepts such as "safe AI," "aligned AI," or "trustworthy AI." No authoritative legal definition has stabilized.
Historical Dictionary Support
Burrill's Law Dictionary does not contain an entry for FAI. The excerpt provided in source material concerns execution of wills and proof of testamentary intent — unrelated to any of FAI's modern meanings. Burrill predates the statutory framework for fatal accident inquiries in their modern form, and the abbreviation FAI does not appear as a recognized legal term of art in nineteenth-century Anglo-American legal dictionaries generally.
The absence of FAI from historical legal dictionaries is informative: it confirms that the term's legal currency is modern and statutory rather than rooted in common law tradition. Researchers should not expect doctrinal or definitional support from historical dictionary sources and should work from the governing statutes and official guidance documents directly.
Jurisdictional Note
Fatal Accident Inquiries as a distinct legal institution are specific to Scotland. England and Wales use the coroner's inquest system for analogous purposes. Comparative researchers should avoid treating the two as procedurally equivalent: jurisdiction, governing statute, presiding officer, and the legal effect of findings all differ.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Fatal Accident Inquiries; Coronial Law