Technicians now are replacing two seals where there previously was a small hypergolic fuel leak at Discovery’s right-hand crossfeed line flange.
Propellants from the four orbital maneuvering and reaction control system tanks and the crossfeed have been drained. Crews will disconnect the right-hand fuel crossfeed flange, perform an inspection and replace the primary and secondary seals.
The seal replacement is expected to be completed tonight. The work should not impact the targeted launch date on Nov. 1.