Description

Found this ATC video and thought it was worth discussion here.

On April 29, 2026, United flight UA1389 (Boeing 757-300) from Denver to San Francisco was reportedly about 7 miles from SFO on final approach when the crew reported seeing something crossing right-to-left. According to the report, they also referenced seeing something on TCAS and later estimated it appeared to be moving roughly “twice the speed of an airplane.” Estimated altitude mentioned was around \~700 ft.

What makes this one interesting to me isn’t the speed estimate alone (those can be deceptive), but the combination of:
• airline crew observation
• low altitude near approach
• apparent TCAS/traffic reference
• no obvious explanation attached

Not claiming aliens but just seems like an interesting unresolved aviation/UAP case. Curious what people think this was? Drone? Traffic artifact? Military? UAP?