A Proton K/DM-2 was lost when fire broke out in a second-stage engine turbopump, shutting down all four second-stage engines 222 seconds into flight from Baikonur. Russia's Express-A1 communications satellite was destroyed in the accident.
- Outcome
- Failure
- Orbit
- Direct-GEO
- Geostationary orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 94th
- of 110 Proton K/DM-2 flights
- Date and time
- 27 October 1999, 16:16 UTC
- Rocket
- Proton K/DM-2
- Builder
- Khrunichev
- Launch site
- 200/39 (200L), Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Communications
- Launches in 1999
- 62nd of 78