Reflecting on this situation, I actually feel sorry for Lufthansa. Their policy of having German national recruiting, though discriminatory is sensible, given that German workers are famed for their diligence and serious attitude to duty.
The airline also has an excellent safety record and has the maximum ranking seven star safety rating. Unfortunately though there is a trap in this situation, since management tends to react to needs. With no apparent problem and everything going so well over a sustained period, there is a natural tendency to leave well alone on the principle "if it ain't broke, don't fix it".
In such an environment it's all too easy to miss an odd rogue who is skilfully making every effort to conceal his situation, as Andreas Lubnitz was doing. After all, it seems even his captain who sat alongside him day after day for hours on end hadn't perceived anything untoward.
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