The artwork possibly featuring the Coastguard Maverick
The Coastguard Maverick was a helicopter from Grand Theft Auto: Vice City, Grand Theft Auto: San Andreas and Grand Theft Auto: Vice City Stories that was cut during development of all three games. As indicated by its name, the helicopter may have been a Maverick adapted for use by the Coastguard.
Also, one of the first concept artworks for GTA Vice City Stories showed a blue variant for the Maverick with a red stripe which doesn't appear anywhere in the game. The Coastguard Maverick's Handling exists in both Grand Theft Auto: Vice City and Grand Theft Auto: San Andreas's Handling.CFG's known as COASTMAV.