STS-119: March launch possible via FCV replacement and MPS protection

A launch of STS-119 prior to the Soyuz cut out in mid March remains on the cards, as managers prepare to meet on Wednesday for a launch date discussion. The meeting will also outline a plan to “beef up” the most vulnerable area of the MPS (Main Propulsion System) plumbing, which would reduce risk associating with launching Discovery without redesigned Flow Control Valves (FCVs). Last Friday’s Delta Flight Readiness Review (FRR) came close to approving flight rationale for STS-119. However,