◆ CASE FILEThe facts, corroborated
The Yorkshire Incident (1952)
In December 1952 the CIA's scientific intelligence chief recorded a British report that senior RAF officers and pilots had seen a "perfect flying saucer" during a demonstration at an RAF airfield in Yorkshire, and that so many people saw it the press took it up. The historian David Clarke identifies it with the RAF Topcliffe sighting of September 1952, though the memo dates the incident to early December. This is the record of what was reported, not a verdict on what was over Yorkshire.
◆ THE SHORT VERSION
- The Yorkshire Incident (1952) is a reported UAP case in an RAF airfield in Yorkshire, England, 'about ten to twelve days' before 15 December 1952, per the memo.
- A CIA memorandum of December 1952 records a British report that a 'perfect flying saucer' was seen by senior RAF officials and pilots during a demonstration at an RAF airfield in Yorkshire.
- So many people saw it, the memo says, that many articles appeared in the press, and the coverage troubled its British source, R. V. Jones.
- The historian David Clarke identifies it with the RAF Topcliffe sighting of 19 September 1952, though the memo dates the incident to early December.
- For this case Fractured Realities holds 1 distinct source and 1 corroborating primary document.
- The archive grades it L0 · SINGLE ACCOUNT — the archive holds one account of it, from a single source.
Counts are resolved totals of what sources say, computed 2026-10-03; the reported details above are claims in the record, not findings. A record of reports, not a verdict on what happened.
EVENT DATE
'about ten to twelve days' before 15 December 1952, per the memo
LOCATION
an RAF airfield in Yorkshire, England · United Kingdom
COORDS
54.00°N 1.50°W
INDEPENDENCE
L0 · SINGLE ACCOUNT
SOURCES
1 distinct
CLAIMANTS
0
STATUS
Known from released government records
NUMBERS COMPUTED 2026-10-03 · RESOLVED COUNTS, NOT A VERDICT
