MISSION CONTROL: Discovery, Houston. Good news, you're go for
the deorbit burn and you can do the APU start on time.
PAM MELROY: Copy, go for the deorbit burn. APU start on time.
KYLIE CLEM: The propulsion officer here in mission control reporting that both orbital maneuvering system
engines are firing for the deorbit burn. It will remain on for 1 minute and 53 seconds to slow the
shuttle by about 215 feet per second, or 147 miles per hour, serving as the braking rockets to enable
Discovery to drop out of orbit for its hourlong descent back to Earth. each orbital
maneuvering system engine providing 6,000 pounds of thrust for this maneuver.