The Department of Conservation (DoC) has announced it's suspending all use of Robinson Helicopters for transporting.
The announcement comes after a Robinson R-44 Helicopter crash killed two people on Monday north of Whangarei.
The men died in the accident at Glenbervie Forest on Monday, while aerial spraying for timber harvesting company Rayonier.
The R-44 has now been placed on the Transport Accident Investigation Commission's (TAIC's) watchlist over safety concerns.
It was added to the list due to its involvement in a number of fatal crashes.
DoC says the decision to stop use of the Californian-based company's aircrafts has been made to protect its staff, volunteers and contractors.
Yesterday, Rayonier managing director Paul Nicholls said the company would seek advice before putting another chopper in the air.
"The Robinson R-44s are very common in New Zealand. We don't know what the cause of the accident is yet so we'll just wait and see what advice we're given."