It is self evident to all pilots in PNG that if they go into the trees in mountainous terrain, and there is plenty of that all over the country, it could be several days until they are found. If at all. And it's not through the lack of rescue options either. They are still finding planes that went missing in WW2, the jungle has a habit of swallowing you up and leaving very little or no sign of your unfortunate visitation. And history also shows, don't expect your ELT beacon to be of much use to the rescue effort.