Hereīs a good example of what can happen when a regional airline doesnīt pay itīs pilots good enough wages and therefore must employ inexperienced people: a serious incident report by the Finnish AAIB. The captain had 50 hours (!) and the copilot some 80 hours on ATRs (and a whopping total of 365 flight hrs!). They tried to shoot an NDB approach at Seinajoki airport Jan 2007 but forgot to change the altimeter setting, which meant that the plane was flying 950 ft too low. This resulted in 3 EGPWS warnings and go-arounds, one stick pusher warning, one excessive bank angle warning and one configuration warning - and finally, a diversion. The co-pilot had actually NEVER flown an NDB approach at Seinajoki before. Lucky to be alive, poor bastards...
Read all about it, in English here:
http://www.onnettomuustutkinta.fi/43213.htm