The Hydra is the first jet fighter to appear in any Grand Theft Auto game, and is based off the McDonnell Douglas (now Boeing)/BAe Harrier II, although the air intake resembles that of a Lockheed F-16. The Hydra also includes an auto repair system which can repair the main body of the craft after minor impact. However it can not repair the wings or a head on crash. It is equipped with lock on missiles and flares as countermeasures. It's the fastest aircraft in all of San Andreas and one of the easiest to fly. You can switch between hover and flight mode by pushing the right analog stick forward/back. The Hydra can be attained by a cheat code or at Easter Basin Naval Station, in a hangar at Verdant Meadows Aircraft Graveyard after the mission Vertical Bird, at Sweet's house after 100% completion and at Area 69 after Black Project.
It is rated by many players as their favourite aircraft, for its speed, agility, and weapons which make it an excellent for any purpose requiring an airplane.
Enemy Hydras will deploy missiles at the aircraft if the player attempts to get in. Two Hydras will go after the player at 4 star Wanted Level or higher and try to take down the player. The enemy Hydras should be no match, as they have a penchant for flying in lazy circles and not deploying flares.
Look at the side of the craft, behind the wings. You can see text DMA and something. DMA used to be Rockstar North.