Ops at altitude.... gives a survey aircraft a very benign life compared with training and bush charter. Its life up there is in the cruise and smooth, usually.
The problem has occured at low level..there has been the wing loss of a PA 32 on pipeline patrol. Had some 12K hours of belting thru turbulence in Texas ? and etc. The extreme life yielded an extreme result.
Could be others.
The wing loss of one near Moruya ??? over the ranges was due to severe turbulence.? Nasty. Wasnt a long lifed one...hours not great
Not the sort of rivet testing you want to do !!
