Tehran / F-4 (Iran, 1976)

Iranian F-4 jets lost instruments approaching an object; documented in a U.S. intelligence memo.

On 19 September 1976, a radar and visual sighting of an unidentified flying object (UFO) occurred over Tehran, the capital of Iran, by civilians and military personnel. In separate incidents, two Imperial Iranian Air Force F-4 Phantom II jet interceptors reported losing instrumentation and communications as they approached the object. These were restored upon withdrawal. One of the aircraft also reported a temporary weapons systems failure while the crew was preparing to open fire. An airliner also reported radio failure. It is one of the most "credible" incidents in ufology due to the level of documentation and the professional status of people involved.