- What was Project Condign?
- Project Condign was a study of Unidentified Aerial Phenomena in the UK Air Defence Region, compiled by the Defence Intelligence Staff's DI55 branch between 1997 and 2000 and issued in December 2000 as Scientific & Technical Memorandum No. 55/2/00. Originally classified SECRET UK EYES ONLY, it was released under the Freedom of Information Act in May 2006.
- What did Project Condign conclude?
- Chapter 4 argues that most unexplained sightings are buoyant atmospheric plasmas with potential medical and flight-safety effects. The study found no statistical evidence that UAP surveil strategic sites such as power stations, airfields, or nuclear facilities, and endorsed the 1953 US Scientific Advisory Panel reading of WW2 foo fighters as electromagnetic phenomena.
- What sources did Project Condign draw on?
- DI55 built a relational database of UAP descriptors (sounds, shapes, lights, locations, colours, velocities, witness credibility) from sightings in the UK Air Defence Region from the 1950s onward. The corpus includes the DEFE 31/172 and DEFE 31/173 files of DI55 UFO reports from 1978-1986, identified as Condign source material, and the report's account of the suppressed 1950 Flying Saucer Working Party.