Originally Posted by parabellum
Next time in the SIM get the instructor to set it all up, give an engine separation and you then ignore the bleed leak until you have done those items you consider more important.
Even if you had an engine separation, you'd only have a single bleed duct leak. In B737, left and right bleed ducts are isolated during normal operations, since isolation valve is in closed position when you have both engine bleed switches ON (regardless of actual valve position / pressure) and both pack switches AUTO/HIGH.
For example, with left engine separation, right engine bleed, duct and pack would remain intact and therefore provide sufficient pressurization - even at normal cruising levels.
Would you care to provide a probable scenario where an engine separation would cause a dual bleed duct leak (and resulting pressurization failure) on B737?