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

Updated 4 Dec 2016
S.P. Leitheah, Deputy Director Civil Air Traffic Operations:
The aircraft was 55 nms North of Reus when the crew first sighted the object some 6 nms ahead and to port. It crossed left to right at right angles and then turned and came towards the aircraft, passing below and to the starboard. It was difficult to assess distance because of haze and lack of knowledge of size, but it was estimated to pass within a to mile.The object remained in sight for a total of approximately 2   minutes and its final heading was due South. The aircraft was flying at a Flight Level 170 heading approximately due North in a clear sky with haze and the sun setting to port. There was no apparent drift and the incident was reported to Barcelona Control on radio telephony and later, on landing, to the RAF Duty Office at Manston. (Copy sent to Ministry of Defence, S(4) (Air).

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.)

Fran Ridge:
Sept. 10, 1967 Barcelona, Spain
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. But new doc found (*) by Deputy Director of Civil Air Traffic seems to preclude the balloon evaluation. However the date is now in question and I would go with the DDCATO records regarding that.

Detailed reports and documents
reports/670910barcelona_report.htm (Dr. James E. McDonald)
Feb 9, 1968 letter from DD/CATO to Hennessey (Fran Ridge & Rich Vitello) *

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