Airways NZ's air traffic control services are to be withdrawn from its tower at Hawke's Bay Airport.
The airport, which is part way through a terminal expansion, is one of seven airports affected by the Airways NZ decision on Tuesday.
Towers at Gisborne, New Plymouth, Rotorua and Invercargill airports will also be withdrawn, while the company will also cease providing airfield flight information services at Kapiti Coast Airport and Milford Sound Piopiotahi Aerodrome.
Passenger safety and airline operations will not be affected by the decision to withdraw the services, according to Airways CEO Graeme Sumner.
"Over the past month Airways has worked alongside our staff and their union, the airports concerned and Air New Zealand to determine how we can best respond to the current crisis while also ensuring we are able to help drive the aviation sector's recovery and future growth," he said.