Following stage separation, the first stage of the Falcon 9 will attempt a landing on the "Of Course I Still Love You" drone ship.
Live video from the drone ship showed a small fire develop around the base of the first stage after landing, but fire suppression equipment quickly doused the blaze, and the barge will return the rocket to Port Canaveral in a few days for refurbishment and potential reuse.
Koreasat 5A's on-board engine will conduct multiple burns to circularize its orbit around 22,300 miles (35,800 kilometers) over the equator a few weeks after launch.
The new satellite will replace KT Sat's Koreasat-5 spacecraft, which was deployed in 2006.
By bringing rockets back to Earth after flying payloads to space, engineers on the ground can refurbish those launchers and use them for multiple missions, instead of the usual "one and done" philosophy that has dominated rocketry until now.
Major blasts hits Somali capital Mogadishu
He said he saw at least three armed men in military uniforms running toward the hotel after the suicide bombing at its gate. The US has been actively involving in trying to combat the group, launching 20 drone strikes.
The company plans at least three more launches this year, including a secret, presumably military mission next month, launch of a space station resupply mission in early December and the maiden flight of the Falcon Heavy before the end of the year.
Koreasat-5A is the second satellite launched this year for South Korean satellite operator KT Sat, following an Ariane 5 dual launch of Koreasat-7 and Brazil's SGDC satellite in May.
According to some sources, it is revealed that the next launch of a CRS-13 resupply mission to ISS (the International Space Station) will take place from Canaveral's SLC 40 at Cape Canaveral Air Force Station situated in Florida. Problems with the satellite's solar arrays have forced the communications company to retire the craft.
The satellite will also aid the maritime communications from East Africa to East Asia. The webcast below should begin about 15 minutes before the launch window opens. Five more SpaceX launches are expected to complete the process by mid-2018.