Thanks guys, extremely helpful comments. What concerns me most about the incidents is that they were not reported to the National Transportation Safety Commission (KNKT) as they should have been to allow for the immediate inspection of the aircrafts involved.An airline industry expert I contacted said the KNKT should immediately be appraised on any incident big or small, while the head of the KNKT didn’t really seem to be aware of his function. He told me at one point that yes they should have been informed, then backtracked and said only for “accidents and serious accidents”. He then thanked me for the information and asked that if I find out anything else to contact him.