Mars-2M #522
Failure
APR 02196910:33:00 UTCMissing drain plug caused a first stage engine failure and thrust section fire at liftoff. Booster impacted the ground 40 seconds after launch.
LIFTOFF
APR 02 196910:33:00 UTC
Failure
launched from Pad 81/24 Baikonur
aboard Proton K/D 8K82K/11S824 233-01 into Heliocentric
Payload
Mars-2M #522
Mars orbiter