Category 11 Case Directory


AVCAT is a special project being conducted by NICAP, with the help and cooperation of the original compiler of AIRCAT, Dr. Richard Haines, and other sources, to create a comprehensive listing of sightings from aircraft with detailed documentation from these sources, including Projects SIGN, GRUDGE & BLUE BOOK.

Aircraft Encounter Near Barcelona
Sept. 10, 1967
Barcelona, Spain

5:35 p.m. GMT
Duration 2-3 mins
aircraft, Air Ferry DC-6
United States
observers, crew 4
No radar contact

Fran Ridge:
Sept. 10, 1967 Barcelona, Spain
(AL) Capt. Fred Underhill, Air Ferry Ltd. Cone reportedly maneuvered near plane, haze or mist around bottom. No real explanation has surfaced to explain away this sighting other than a vague balloon possibility that does not satisfy the parameters of the pilots' reports. Description of inverted cone and maneuvers would seem to preclude any type of balloon but a recent discussion by the A-Team strongly suggests  insufficient data for evaluation. This case is currently rated a "3": Possibly explainable but with elements of strangeness.

Richard Hall:
Sept. 10, 1967; Barcelona, Spain
5:35 p.m. GMT (1:35 p.m. EDT). Just before sunset, an airliner crew flying northbound at 16,000 feet watched a metallic, maneuvering cone, with point upward and with mist around its lower portion. The object turned, changed course, descended and approached the airliner, passing under its starboard wing at an estimated 600-700 knots and disappearing to the south after 2-3 minutes. (Hall, 2001, p. 130 from: Volunteer Flight Officer Network, report via United Airlines; McDonald, 1968b, Case #6, reprinted in Vaughan, 1995, pp. 127-28; MUFON UFO Journal, Sept. 1987, p. 19; London Daily Express, 9/11/67 and 9/14/67; U.F.O. Investigator, Vol. IV, No. 3, Nov.-Dec. 1967 p. I.)

Detailed reports and documents
reports/670910barcelona_report.htm (Dr. James E. McDonald)

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