A number of residents spoke up at the council meeting expressing concern the city was moving forward with their plan without notifying the residents who would be affected.
John Hancock lives on Peacock Lane near the airport and is concerned that there are already too many helicopters at the airport.
"Yesterday a heliocpter flew so low over my house that I could smell it when it went past. Five o'clock in the morning last week a 900 horsepower turbine helicopter sat on the runway for two hours at five in the morning to test it."
However councilor Jodie Barram reminded them that the proposal that council was considering was not a "go ahead" on the plan, but rather a study to examine the impact.
"Our vote tonight is not to say that we are rubber stamping for bigger helicopters and everything we are focusing on the study and wanting more public involvement to get to a reasonable decision."
The measure passed unanimoulsy. Bend's city manager suggested residents take their complaints to the Deshcutes County Commission since they will grant final approval.