However, the New Zealand Air Line Pilots' Association described the situation as comparable to removing traffic lights at a busy intersection.
"That is one interpretation. But it is about managing risk and provided the procedures to be flown for approach and departures are well designed, well depicted and clearly understood and used properly by all users, the risk presented by operating in uncontrolled airspace can be managed," they said.
A number of airports in New Zealand used by scheduled Air New Zealand flights already function without an air traffic control, including Kerikeri, Whangārei and Hokitika.
Other second and third tier airlines operate scheduled flights in and out of Whakatāne, Whanganui, Timaru, Oamaru and Taupō without local air traffic control.
Aslam added: "If Airways reduce the level of service at Napier and Gisborne, I am confident we can all continue to operate in a safe manner by understanding the procedures and applying good airmanship and patience."