This thread started by asking detail of solo flights from England to Oz.
Although distracted somewhat by more recent events there has not been any mention (that I have seen) of the SOLO flight conducted by Jan Schönburg in Cessna 150, G-AWAW, in 1980 in honour of 50 yrs since Amy Johnson's flight.
No real backup, no gps.
That was a real effort, but got very little coverage outside the aviation and local press of the day. She did write a book - will have to dig it up.