Ariane 3 flight V15 from Kourou failed when the third stage did not ignite, destroying dual GEO payloads ECS-3 (Eutelsat I F-3) and Spacenet 3 communications satellites.
- Outcome
- Failure
- Orbit
- Direct-GEO
- Geostationary orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 5th
- of 11 Ariane 3 flights
- Date and time
- 12 September 1985, 23:26 UTC
- Rocket
- Ariane 3
- Builder
- Aérospatiale
- Launch site
- Ariane Launch Area 1 (ELV), Guiana Space Centre, French Guiana
- Payload
- Communications
- Launches in 1985
- 83rd of 125