AV-19 SkyHawk
From Halopedia, the Halo wiki
Crew: 2 - Pilot and Gunner
Weight: Unknown Armament: 50mm Gatling Guns Secondary: Scorpion Missiles
Summary
SkyHawks were older orbital jets located on major UNSC worlds. They were equipped with 4 50mm guns, as well as Scorpion Anti Tank missiles. Several of these craft were located at Fairchild Field on Reach and one was dispatched by Colonel James Ackerson to attack the Master Chief and Cortana during their test of the MJOLNIR armor and its new shield technology in 2552.
The Skyhawk is a jump jet VTOL (Vertical take off and landing) air attack fighter. It is armed with a quad set of 50mm gatling guns, and Scorpion Missiles that are capable of destroying tanks. It's ability to take off and land vertically, like the Pelican, making it useful where landing zones have no runway. Therefore, it is almost the human equivalent of a Banshee, although much larger.
What is assumed to be a skyhawk can be seen in the Halo Wars trailer, during the unsc battle against the covenant.