Luis Vaca — Rosario; Province of Santa Fe

Official source account — 2021 annual report, printed page 50: Luis Vaca noticed a faint object moving leftward and approaching in a landscape video. His submitted map established the camera's northwestern bearing. CIAE compared the recording with historical air traffic and matched Delta flight DAL101 travelling from the United States to Ezeiza. Its direction and timing agreed with the video. The agency classified the aircraft identification Type A. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes. The map uses an approximate GeoNames locality centroid, not the observation point.