AV-19 SkyHawk

SkyHawk The Skyhawk is a United Nations Space Command Strike Fighter.

Background
They are equipped with four 50mm cannons, which were so many times stronger than chain-guns that they "made the chain-guns look like peashooters", 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 SPARTAN-117 and Cortana during their test of the MJOLNIR Mark V Battle Armor and its new shield technology in 2552. Despite all expectation, the Spartan and AI managed to avoid it's Anti-Tank Missiles, which were guided, by pushing the metal casing away at the last moment and proved themselves immensely more successful than ever expected. These aircraft were capable of supersonic flight and can execute quick turns at maximum speed.

Trivia

 * It has only been referenced in the Halo novels, it's not included in any of the games.
 * It shares its name with a real life fighter jet, named the A-4 Skyhawk, and may be its spiritual successor.
 * Its name like many other vehicles in the Halo series is based off a animal.