Intelsat 4 F6
Launch Failure
Liftoff Time (GMT)
23:35:00
Thursday February 20, 1975
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Mission Details
Launch Notes
Improper separation of a lanyard during booster jettison reset the missile programmer and caused loss of control.
Intelsat 4 F6
Intelsat IV F-6 was a geostationary communication satellite built by Hughes, it was owned by Intelsat. The satellite was based on the HS-312 platform and its estimated useful life was 7 years.
Geostationary Transfer Orbit
1 Payload
1,414 kilograms
Rocket
Launch Site
Stats
Atlas-Centaur
34th
Mission
1st
Mission of 1975
1975
14th
Orbital launch attempt