REGARDING missing Malaysia Airlines flight MH370: Australia has a very high-tech, early warning coastal security system formally called the Jindalee Operational Radar Network (JORN).
It can track surface craft as well as aircraft the size of a Cessna 182 at 3000 kilometres.
If an unidentified aircraft, as suggested, came down our north-west coast, automatic alarms should have activated.
If an aircraft the size of Boeing 777 with no identity response got through, what next?
Or did it not enter our airspace?
John Williams,Lemon Tree Passage