Case file · Declassified record
DIA report on the 1976 Tehran jet chase
A US Defense Intelligence Agency report on two Iranian F-4 jets that lost instruments and weapons control while chasing a bright object near Tehran.
1976 CE · 35.69, 51.39 · status: official
The account
The report, passed from the US defence attaché and released under FOIA, was circulated with an evaluation that rated it an outstanding report with credible witnesses, radar confirmation and equipment effects. It's the reason the Tehran case is treated as one of the strongest on record.
The sceptical view
Skeptics such as Philip Klass argued that the pilots chased the planet Jupiter and suffered unrelated equipment faults.