Pioneer P-31
Failure
DEC 15196009:10:00 UTCVibration and/or flying debris from Able adapter section ruptured Atlas LOX tank T+66 seconds, followed by complete vehicle self-destruction at T+73 seconds.
LIFTOFF
DEC 15 196009:10:00 UTC
Failure
launched from LC-12 Canaveral
aboard Atlas Able 91D into HEO
Payload
Pioneer P-31
Lunar probe