STS-131: RRCS testing positive ahead of FRR flight rationale decision

A full set of testing on the primary and secondary regulators on Discovery’s Right Reaction Control System (RRCS) – located downstream of the leaking helium isolation valve – has being classed as a success. The health of the system’s redundancy will boost the chances of managers approving flight rational at the upcoming Agency-level Flight Readiness Review (FRR).
STS-131 RRCS Issue Latest:
Rollback and a three month delay for STS-131 is still not being ruled out, although it has become far less likely due to the two sets of testing on the RRCS’ regulators. Even prior to the weekend testing, managers were concentrating on “next failure” impacts related to the system during flight – another element of approving flight rationale.
Armed with test data and flight rationale information relating to impacts to the mission should the situation worsen on orbit, managers will conduct a special PRCB (Program Requirements Control Board) meeting on Tuesday to prepare for Friday’s FRR.
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“MOD (Mission Operations Directorate) has been looking at Right RCS next failure ops impacts. Will be going over the charts to go forward for the RCS Helium ISO Valve on OV-103 (Discovery),” ...