Tehran incident
Two Iranian F-4 jets reported instrument and weapons failures near an object.
1976 CE · 35.69, 51.39 · status: unexplained
The account
A U.S. Defense Intelligence Agency report documented the multi-witness, multi-instrument case in detail.
The researched reading
A well-documented military intercept with radar and instrument effects. Planets, meteors and faults explain much of it, but a real open share remains.
| Explanation | Weight | Why |
|---|---|---|
| Something known, misidentified | 36% | Klass and Oberg argued the first light was Jupiter, and Dunning noted Piscid meteors that night; the first F-4 had a history of electrical faults. |
| Genuinely anomalous | 32% | Two F-4 crews reported radar contact and instrument and weapons failures near the object, documented in a DIA report. |
| A poorly understood natural phenomenon | 10% | A rare luminous phenomenon could explain bright lights but not the failures. |
| Perception, memory or mind | 10% | A tense night intercept leads crews to misread instruments and lights. |
| Secret human technology | 6% | No known secret aircraft fits. |
| A known natural phenomenon | 4% | Atmospheric effects could distort lights. |
| A hoax or fabrication | 2% | Military crews and a DIA memo argue against a hoax. |
Official position: A US Defense Intelligence Agency memo described it as a classic case meeting all criteria for a valid UFO study; no official explanation was given.
How the account grew
Two Iranian F-4 interceptions of a bright light in 1976 were relayed in a US defence memo, then expanded in interviews over two decades into a chase by a craft that launched objects; skeptics proposed Jupiter, meteors and a fault-prone aircraft.
| Year | Who | Added |
|---|---|---|
| 1976 | Mehrabad tower; Lt. Yadollah Nazeri and Maj. Parviz Jafari | A bright object over Tehran; the first F-4 loses instruments and radio; the second gets a radar lock, sees a smaller object come at it and loses weapons control when trying to fire. |
| 1976 | US Defense Intelligence Agency report (Col. Mooy) | The report goes to the Joint Chiefs, CIA, State Department and White House; a DIA evaluation calls it 'outstanding'. A beeping transponder at the 'landing' site is traced to a C-141. |
| 1977 | Lt. Gen. Shapour Azarbarzin | Interview estimating the object's speed at Mach 3. |
| 1994 | Sightings (TV); Yadollah Nazeri | Participants interviewed; Nazeri says the object outran him at Mach 2 and he came to believe it was extraterrestrial. |
| 2007 | Gen. Parviz Jafari, National Press Club | The retired pilot testifies publicly in Washington. |
| 2012 | Brian Dunning, Skeptoid #315 | Notes meteor showers that night and, following Philip Klass, that only one jet with a record of electrical faults failed; the first light was likely Jupiter. (dropped: The two-aircraft failure claim.) |
Connections in the atlas
- DIA report on the 1976 Tehran jet chase
- Philip J. Klass
- Kean, 'UFOs: Generals, Pilots, and Government Officials Go on the Record'
- Richard F. Haines
- Philip J. Klass