collided in mid-air
... that on 29 September 1940, two Avro Ansons collided in mid-air over Brocklesby, Australia, became locked together in "piggyback" fashion, and then successfully landed in a field?
... that on 29 September 1940, two <a href="./Avro_Anson" id="mwDCk" rel="mw:WikiLink" title="Avro Anson">Avro Ansons</a> <b id="mwDCo"><a href="./1940_Brocklesby_mid-air_collision" id="mwDCs" rel="mw:WikiLink" title="1940 Brocklesby mid-air collision">collided in mid-air</a></b> over <a href="./Brocklesby,_New_South_Wales" id="mwDCw" rel="mw:WikiLink" title="Brocklesby, New South Wales">Brocklesby</a>, Australia, became locked together in "piggyback" fashion, and then successfully landed in a field?