RB-47H Electronic Intelligence Aircraft Encounter

Record summary

A U.S. Air Force RB-47H electronic intelligence aircraft crew reported tracking an unusual object across a long route from the Gulf of Mexico toward the central United States. The crew’s account involved visual observation, onboard electronic indications and ground radar reports, making it a frequently cited military case. Project Blue Book reviewed the incident, while later researchers disputed whether the observations represented one object, multiple sources or radar and propagation effects. The flight records and investigation are more securely identifiable than any extraordinary conclusion.