Where to find the buzzard in gta v story mode?

The buzzard appears in the story‑mode mission titled "Buzzard Attack," which is part of the main campaign. During this mission, your character is instructed to retrieve the buzzard from the Blaine County Airport, a location just north of the Sandy Shores area. The helicopter sits on the ground in the airport’s parking area, and you can take it once you complete the mission’s objectives. There are no hidden or alternate locations for the buzzard in story mode outside of this mission.