Planes and helicopters, both in flight or downed/damaged, would be common in South Sudan. They had numerous wars in Christian-S. Sudan from late 1950s. Russia backed the northern Muslims in "Sudan" who tried to eradicate Christianity in "South Sudan". South Sudan has been bombed from the air and ground, and fought over with troops from air and ground.
The drought and wretched situations in South Sudan also brought helicopters and planes in vain attempts to bring humanitarian relief to suffering peoples.