The industry appears to have coped remarkably well so far this week. As of Thursday at 5pm, there had been just nine cancellations in the last 24 hours at Sydney Airport, five at Melbourne and six at Brisbane.

A final investigation revealed the most likely explanation was that Stewart Wavill simply misread the altimeter, but no definitive conclusion could be reached. The accident killed the pilot and four onboard.

The RAAF tells the story of how Palm Island uniquely paid its respects to the man who died when his Hornet crashed in Queensland in 1987.

The most significant alterations mean that there will now be four different categories of aircraft operations, with different reporting requirements for each, plus a new push for sport aviation bodies to alert authorities to incidents.