Originally Posted by
hzz661225
Air bleed 1 leak leads to unusable apu bleed ，eng bleed1 and pack1 whcih means you fly the bus with eng2 bleed and pack2 ONLY
the decision to continue crusing means low safety margin usually airbus do not recommend fly the bus with no back-up sys
Hi
hzz661225 and thanks for your feedback.
Consider this : as per A320 MEL, you are legal to dispatch in a single bleed and single pack configuration, however should that happen in flight as a result of a failure or combination of failures, the most important aspect is that whatever your decision is, the latter is taken based on appropriate elements. When running the "what if" scenarios (that's basically what we do most of the time on ground and in flight, be it in normal or abnormal conditions) we evaluate risks and benefits of our potential plans and it might well be that some circumstances dictate a diversion whilst others do not necessarily.
In highly standardized operators there is no such thing as decision A is a pass and B is a fail because TRE SoAndSo thinks this way. TRE SoAndSo must evaluatebased on
facts and
observable elements at the time of the test and be open to a huge variety of thought processes that he/she should be able to recognize and discuss with the candidates during the debriefing.
So my point is : if a sim scenario has only one possibile outcome according to your training department, then I am afraid this is where the real issues are.