Titan 34D from Vandenberg SLC-4E failed seconds after liftoff carrying KH-9-20 (Hexagon, the last Big Bird) and a secondary ELINT payload; a solid rocket motor burn-through caused the vehicle to explode.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 5th
- of 7 Titan 34D flights
- Date and time
- 18 April 1986, 18:45 UTC
- Rocket
- Titan 34D
- Builder
- LM
- Launch site
- Space Launch Complex 4E, Vandenberg SFB, CA, USA
- Payload
- Government/Top Secret
- Launches in 1986
- 33rd of 110