This aircraft is an unidentified Royal Australian Air Force (RAAF) aircraft wreckage near Gona. The wreckage includes two engines and a wing section remain near Gona, behind the beach and north of the creek. Traces of the RAAF Roundel are present on the lower surface of the wing.
This wreckage is likely DB-7 Boston A28-20 that exploded in mid air over Gona. Or, less likely, wreckage of DB-7 Boston A28-22 that exploded mid air over Buna.
Thanks to Phil Bradley and Daniel Leahy for information
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January 9, 2018