A37575, Thats just my point, when a much younger person flying some of the earlier jet fighters, many of which had marginal presurization and O2 systems it was drilled into us to check cabin diff/cabin alt/ and O2 flow on the way up on every flight, including close formation, those who didnt sometimes paid the ultimate price. I really dont care what aircraft a person is flying, such procedures apply to all {Unless you are REALLY good at holding your breath} If such drlills are ingrained from day one such crashes as the Greek disaster just wont happen, but to depend on reading a checklist during climb will not catch the problem every time. As an end note, Im amazed the number of pilots Ive flown on re current training who just dont have a clue as to where the cabin alt/diff should be at various altitudes in the climb.