The aviation industry should consider painting its planes with bright colours to stop mid-air collisions, a coroner says.
Flying instructor Jessica Rose Neeson and student pilot Patricia Smallman died when their plane collided near Feilding Aerodrome with one piloted by student Manoj Kadam, who landed his damaged plane safely.
Coroner Tim Scott said both planes were predominantly white, and it was possible high-visibility paint could have prevented the crash.
He said everyone involved knew the other aircraft was in the area but failed to register the importance of the radio transmissions stating each pilot's intentions.
Mr Scott said the airfield had already made improvements, including decreasing the maximum height of departing aircraft and he would not be making any formal recommendations.