SpaceX PSN Satria Mission - Live Commentary

SpaceX is targeting Sunday, June 18 for Falcon 9’s launch of the PSN SATRIA mission to a geosynchronous transfer orbit from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space Force Station in Florida. The 178-minute launch window opens at 6:04 p.m. ET (22:04 UTC). If needed, a backup opportunity is available Monday, June 19 with a 198-minute launch window opening at 5:54 p.m. ET (21:54 UTC).

The first stage booster supporting this mission previously launched CRS-22, Crew-3, Turksat 5B, Crew-4, CRS-25, Eutelsat HOTBIRD 13G, O3b mPOWER, and four Starlink missions. Following stage separation, the first stage will land on the A Shortfall of Gravitas droneship, which will be stationed in the Atlantic Ocean.

A live webcast of this mission will begin about 15 minutes prior to liftoff.

COUNTDOWN
HR/MIN/SEC EVENT
00:38:00 SpaceX Launch Director verifies go for propellant load
00:35:00 RP-1 (rocket grade kerosene) loading begins
00:35:00 1st stage LOX (liquid oxygen) loading begins
00:16:00 2nd stage LOX loading begins
00:07:00 Falcon 9 begins engine chill prior to launch
00:01:00 Command flight computer to begin final prelaunch checks
00:01:00 Propellant tank pressurization to flight pressure begins
00:00:45 SpaceX Launch Director verifies go for launch
00:00:03 Engine controller commands engine ignition sequence to start
00:00:00 Falcon 9 liftoff