Endeavour mission back to 14 days

After extending Endeavour's upcoming final flight by a day this week, NASA managers have taken it back.

The second-to-last shuttle flight officially has officially returned to a 14-day mission, with options to add up to two days while in space.

Depending on progress meeting previously planned objectives, the mission could be extended to allow the six shuttle astronauts, led by Mark Kelly, to help out with maintenance on the International Space Station.

Managers added an extra day Wednesday, but decided to subtract it late Thursday, NASA said.

If Endeavour launches as planned at 3:47 p.m. April 29, it would be expected to return to Kennedy Space Center at 9:28 a.m. May 13.

Senior NASA executives will meet Tuesday at the space center to review the flight's readiness and set an official launch date.

IMAGE: On April 1, STS-134 commander Mark Kelly took his seat aboard space shuttle Endeavour during the Terminal Countdown Demonstration Test at Kennedy Space Center. Credit: NASA/Kim Shiflett