Phantom

The Covenant Type-52 Troop Carrier (abbreviated Type-52 TC), also known as the Phantom, was a much more formidable dropship than the previously seen Spirit. Phantoms are equipped with a miniature gravity lift; while the lifts can be used to deploy infantry, -- with the deployment of Hunters being an exception, presumably due to their size. Instead, in hot landing zones, troops will quickly exit through the large doors on either side of the vehicle. Phantoms also ferried vehicles such as the Wraith, Spectre, and Ghost to their intended drop zones.

Pictures
http://images2.wikia.nocookie.net/halo/images/thumb/e/ed/65182630-Full.jpg/300px-65182630-Full.jpg