Complex sentence: Medical teams were delayed more than a day in reaching the crash site due to poor weather, with the survivors being carried on stretchers in torrential rain to a medical post in Andoas becausec the weather prevented their evacuation by helicopter.
Split into simpler sentences: Medical teams were delayed more than a day in reaching the crash site. The survivors were carried on stretchers in pouring rain to a medical post in Andoas because the weather prevented their evacuation by helicopter.