There have been a number of plane crashes in Indonesia over the years. In December 2014, a Lion Air plane crashed into the Java Sea, killing all 189 people on board. In August 2007, a Garuda Airlines plane crashed into a mountain in Java, killing all 150 people on board. And in September 2005, a Mandala Airlines plane crashed into a mountain in Sumatra, killing all 104 people on board.
So why do so many planes crash in Indonesia? There …