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Active leadUseful case file with unresolved ambiguity and room for more corroboration.

United Airlines pilots report unidentified object crossing final approach into SFO at “2x the speed of an airplane” — visual + TCAS contact

UnknownSighting reportApr 29, 2026, 12:00 AMSan Francisco International Airport

Witnesses

Unknown

Duration

Unknown

Source material

3

Timeline

3

Source context

Limited context

41

Interesting, but still missing stronger corroboration or harder source material.

Source provenance

r/UFOs

Live sighting record 640ec2aa-9a56-4f88-b1ee-cde0e8ff8c6c.

Using the selected case's real source, media, and context throughout the workspace.

Correlations

Field Intelligence

Sunlight window

Daytime — sun above horizon

Sighting occurred during daylight hours

Solar window

Sunrise6:18 AM
Sunset7:57 PM
Day length13h 39m

Weather

Open-Meteo
ConditionsClear sky
Temperature62°F
Cloud cover0% · Clear
Wind7 mph

Area activity

Within 2 days1 sightings within 60 mi

Extracted details

Observed facts

Occurred

Apr 29, 2026, 12:00 AM

Timezone

Pacific Time

Location

San Francisco International Airport

Witness account

Narrative

Time: April 29, 2026 during final approach (evening/night approach; exact local time unknown) Location: San Francisco International Airport (SFO), San Francisco, California, USA Found this ATC reconstruction and thought it was worth discussion here. Report concerns United flight UA1389 (B757-300) from Denver to San Francisco. According to the reconstruction, while around 7 miles from SFO on final approach, the crew reported seeing something crossing right-to-left and referenced seeing somethi...

Case progression

Timeline

Encounter windowApr 29, 2026, 12:00 AM

Witnesses place the encounter near San Francisco International Airport.

PublishedMay 20, 2026, 5:24 AM

r/UFOs carried the report into the source network.

Linked event

Grouped into the United Flight UA1389 incident dossier.

Ledger

Source material

media

Cover image

Open

Visual reference carried with the original report.

source

Original report

Open

Direct source material from r/UFOs.

telemetry

Environmental pass

Historical atmosphere, astronomy, and nearby infrastructure were resolved for this case.