A file photo of the CRS-16 Dragon spacecraft, which was launched to the ISS in December 2018. CRS-17 is planned to launch in May 2019. Photo Credit: Michael Howard / SpaceFlight Insider
A file photo of the CRS-16 Dragon spacecraft, which was launched to the ISS in December 2018. CRS-17 is planned to launch in May 2019. Photo Credit: Michael Howard / SpaceFlight Insider

CAPE CANAVERAL, Fla. — SpaceX is gearing up for another cargo Dragon flight to the International Space Station, sending food, supplies and experiments slated for Expeditions 59 and 60.

The CRS-17 mission is scheduled to launch atop a Block 5 Falcon 9 at 3:59 a.m. EDT (7:59 GMT) May 1, 2019, from Space Launch Complex 40 at Cape Canaveral Air Force Station. Originally, the Falcon 9 rocket and Dragon spacecraft were tracking to fly April 26, but constraints in orbital mechanics made May 1 a better choice.

According to the 45th Weather Squadron April 29, the forecast for launch is expected to have an 80% chance of acceptable conditions at liftoff with the primary concerns being cumulus clouds and flight through precipitation. Should the mission be postponed an additional 24 hours, conditions are expected to be less favorable with a 30% chance of a weather rule violation.

Expedition 59 astronauts Anne McClain and David Saint-Jacques of NASA and the Canadian Space Agency, respectively, practice Canadarm2 robotics maneuvers using the robotics workstation. in the Destiny module. Photo Credit: NASA
Expedition 59 astronauts Anne McClain and David Saint-Jacques of NASA and the Canadian Space Agency, respectively, practice Canadarm2 robotics maneuvers using the robotics workstation. in the Destiny module. Photo Credit: NASA

Once it does get off the ground, CRS-17 will be the 17th SpaceX cargo flight to the ISS under NASA’s Commercial Resupply Services contract and the second of five under the extension of phase 1. Phase 2, called CRS2, is expected to begin for the company starting with CRS-21 no earlier than 2020.

The recent incident at Cape Canaveral Air…