From Halopedia, the Halo wiki
The Transport Hornet is a variant of the AV-14 Hornet, predominantly designed for light transport purposes.
The Transport Hornet is identical in most aspects to the original AV-14 - its primary difference is the lack of the missile launchers found on the base Hornet variant, alongside a weaker autocannon.[Note 1] The Transport Hornet has been seen bearing a white paint scheme, in contrast with the olive traditionally associated with UNSC aircraft.
The Transport Hornet was introduced into Halo 3 with the release of the Legendary Map Pack map Avalanche. The Hornet in this map was nerfed for balance reasons to make it viable for multiplayer play, and was later included on the map Sandbox alongside the regular AV-14 to spawn in Forge mode.
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