Ekran 14L (Ekran 3c), a Soviet geosynchronous direct-broadcast TV satellite for Siberia and the Far North, lost when the Proton-K/DM second stage exploded during ascent from Baikonur—the third Ekran launch failure of 1978.
- Outcome
- Failure
- Orbit
- Direct-GEO
- Geostationary orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 12th
- of 66 Proton-K/DM flights
- Date and time
- 17 October 1978, 16:04 UTC
- Rocket
- Proton-K/DM
- Builder
- Khrunichev
- Launch site
- 200/40, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Communications
- Launches in 1978
- 101st of 128