Night Ledger

Record 293 · Established 1997, ongoing

SEFAA / CEFAA Program Overview and Case Classification Methodology

Dirección General de Aeronáutica Civil (DGAC) / SEFAA (formerly CEFAA) · Chile

Ledger illustration of the record — not a scan of the original paper. — Night Ledger illustration of the file

ScientificUnclassified

The program, originally CEFAA and now SEFAA under DGAC, collects reports primarily from pilots, air traffic controllers, and radar operators. A panel of astronomers, engineers, meteorologists, and other experts applies scientific methods to analyze data, videos, and sensor records. Cases are categorized as astronomical/atmospheric, aircraft/human activity, insufficient information, or FANI (unidentified aerial phenomenon). The emphasis is on flight safety rather than origin speculation. Public summaries of findings are released, and historical reviews indicate that while some events lack immediate explanation, no evidence of national security threats or non-conventional propulsion has been identified that affects aviation operations. The program maintains transparency by publishing methodologies and select results.

Public file: DGAC Chile / official descriptions

Related paper