File 47966 · July 17, 1957
RB-47 Encounter
Mississippi to Oklahoma (airborne), United States
Opened 9/14/2026
Ledger illustration of the file — not a photograph of the object. Ledger illustration of the report. — Night Ledger illustration of the file
Standing
Unidentified
On the public record, and still open. A claim, paper, or film — not a finding that it was ours, and not a finding that it was not.
RB-47 crew debrief and sensor data showing simultaneous visual, radar, and ECM detections of the object over multiple states.
What was claimed
A USAF RB-47 electronic reconnaissance aircraft with a six-man crew was followed for over 1.5 hours by an object detected simultaneously on visual, airborne radar, and electronic countermeasures equipment across multiple states. The Condon Committee left it unexplained.
What is on the record
This file is a working record — a report, not a verdict. Official paper, if any, is linked where we have it.
On the night of July 17, 1957, an RB-47 on a training mission from Forbes AFB was tracked by an unknown object starting over Mississippi. The bright blue-white light was seen visually by the cockpit crew, appeared on the aircraft's radar, and triggered ECM monitoring gear. The object repeatedly appeared, disappeared, and reappeared on all three independent systems at the same moments. It performed rapid accelerations and 90-degree turns, pacing the plane for over 700 miles. Ground radar at Duncanville and Carswell AFB also tracked it at times. The full crew of six (pilot Lewis Chase, copilot James McCoid, navigator Thomas Hanley, and three ECM officers) provided consistent accounts. James McDonald later called it one of the most puzzling Blue Book cases; the Condon Report could not explain it.
Could this have been ours?
The known sky, that night.
Satellites were already up. The station was not. Starlink was not.
Always
Venus and the bright planets
A fixed brilliant point. Does not streak. Does not hover over a street then leave. Often the first misread light in a rural report.
Always
Aircraft, balloons, meteors
Landing lights, flares, lanterns, reentries, fireballs. They are on the known sky. They do not close a file by themselves — they are what a serious look has to hold the claim against.
Orbit · Space — the desks for lights that are already named.
Sources
Related files
Same craft, same place, same years. A neighbor in the catalogue — not a conclusion.
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Japan Airlines Flight 1628 Encounter
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Captain Kenji Terauchi and crew of a JAL Boeing 747 cargo flight observed three unidentified objects, including two smaller craft and a massive 'mothership' the size of an aircraft carrier. Objects were tracked on onboard weather radar and by Anchorage ARTCC and military radar for nearly 50 minutes. FAA investigated and held a press conference.