You'll never know when you'll need a Choppa in Fortnite Chapter 2 Season 4. These vehicles are very useful, especially in squads, as you can house four people in them and quickly scour the map to get the best loot, or an advantageous position.
It can be a good idea to catch one at the start of a round, so that you can easily react to how the storm circle is narrowing and stay ahead of the competition. The only thing to watch out for is the potential damage from an enemy four-man squad. If they can remove your Choppa before you can react, there is nowhere for you or your teammates to go.
North of Holly Hedges
You can find a Choppa between Holly Hedges and Sweat Sands, in a small house roughly halfway between the two named locations.
Domain of Doom
Under the Doom Estate soccer field, you'll find a Choppa in the Secret Bunker. Be careful, as Doom itself will occasionally appear here.
Strong industries
You can find a Choppa on a helipad right next to the very tall, thin building of Stark Industries.
Lazy lake
On the island right in the middle of Lazy Lake, you can find a Choppa.
The weather station
In the mountains to the south of the island, you can find Choppa at the weather station landmark.
It is almost certain that changes will be made to the map as the season progresses, adding or removing Choppas. When this happens, we'll update this list accordingly.