The FAA finds out about a pilot's DUI primarily through a mandatory self-reporting system and regular cross-referencing with the National Driver Register (NDR). Under Federal Regulation 14 CFR Part 61.15, any pilot (even students) must report an alcohol-related motor vehicle action to the FAA’s Security Division within 60 days. Furthermore, when a pilot applies for their mandatory medical certificate (via MedXPress), they must explicitly consent to an NDR background check. This database contains records of all driver's license suspensions, revocations, and DUI convictions across the United States. If a pilot fails to report a DUI and the FAA discovers it through the NDR—which they almost always do—the consequences are severe, often resulting in the permanent revocation of all pilot certificates for "intentional falsification." In 2026, the FAA views the failure to report as a greater character flaw than the DUI itself, making honest disclosure the only viable path for a pilot to keep their wings.