Launch Pad 39A crews at NASA's Kennedy Space Center in Florida are preparing for the payload installation into space shuttle Endeavour's cargo bay scheduled . Today, technicians will open the payload bay doors and perform inspections on the spacecraft and payload. Meanwhile, the STS-134 crew will practice flying techniques in their T-38 training aircraft today at NASA's Johnson Space Center in Houston. Launch of Endeavour on the STS-134 mission to the International Space Station is targeted for 7:48 p.m. EDT April 19. During the 14-day mission, Endeavour will deliver the Alpha Magnetic Spectrometer (AMS) and spare parts including two S-band communications antennas, a high-pressure gas tank, additional spare parts for Dextre and micrometeoroid debris shields.