SPACECRAFT AND EXPENDABLE VEHICLES STATUS REPORT
April 29, 2004

George H. Diller
NASA Kennedy Space Center
321-867-2468

MISSION: MESSENGER
LAUNCH VEHICLE: Delta II Heavy
LAUNCH PAD: 17-B
LAUNCH DATE:? July 30, 2004
LAUNCH WINDOW:? 2:17:44 a.m. - 2:17:56 a.m. EDT

MESSENGER is at the Astrotech Space Operations facilities near Kennedy Space Center, where it is undergoing prelaunch testing.

Testing of the spacecraft's radio system uplink and downlinks through the KSC/JPL interface with the Deep Space Network (MIL-71) has been successfully completed.?? Autonomy testing continues.? This verifies MESSENGER's ability to operate on its own when not in direct contact with Earth.? Installation of thermal blankets has been completed as required on the schedule up to this time.

The erection of the Boeing Delta II launch vehicle on Pad 17-B is currently scheduled to begin on June 18 with the erection of the first stage.

The launch period for MESSENGER extends through Aug. 13.

MESSENGER was built for NASA by the Johns Hopkins University Applied Physics Laboratory in Laurel, Md.