Lieutenant John Moncrieff and Captain George Hood were two New Zealanders who vanished on 10 January 1928 while attempting the first trans-Tasman flight from Australia to New Zealand. Radio signals were received from their aircraft for 12 hours after their departure from Sydney, but despite a number of purported sightings in New Zealand, and many land searches in the intervening years, no trace of the aviators or their aircraft has ever been found.