Space Stats

Second stage failed to separate.

Upper stage failed to ignite. Third stage failed to ignite due to loss of radio contact.

The third stage RO-5 engine either did not reach full thrust or shut down early.

Strap-on B reached only 75 percent of thrust at ignition. Four tenths of a second after liftoff it broke away from the core and the rocket exploded.

Second stage attitude control failure. Second stage lost attitude control during the coast phase between its own burn and separation from the third stage.

At ignition one of the combustion chambers in strapon Block B or G burned through. The strapon separated from the core at 17 seconds into the flight and the launch vehicle exploded at 28.5 seconds.

Exploded 2.5 minutes after launch.

The Able second stage ignited abnormally and shut down early because of an oxidizer system failure.

Violent vibrations caused a gyroscope to malfunction. As a result, the booster began to veer from its planned attitude. The guidance system failed at T+309.9 seconds and the third stage (Blok I) engine was shut down at T+324.2 seconds.

Second stage failure.

At T+290 sec Stage 3's engine 8D715K failed to ignite because a LOX leak froze kerosene in the fuel inlet to the pump on the launch pad due to a faulty LOX valve seal.

Second stage malfunction.

The Able upper stage prematurely ignited while the first stage was still firing and exploded at T+74 seconds at an altitude of about 12.2 kilometers.

The third stage engine RO-7 failed just after ignifition