From Halopedia, the Halo wiki
The "corp" Pelican[Note 1] is a version of the D79-TC Pelican dropship. It is a seemingly-civilian conversion of the standard military D79, employed by the Liang-Dortmund Corporation during their operations on Meridian.
The corp Pelican is employed by the corporation for lifting and transporting cargo. They are painted in the Liang-Dortmund yellow and white color scheme, and appear to have their weapon systems removed.
At least two corporate Pelicans were present at Meridian Station on Meridian in October 2558. Following the start of the Battle of Meridian and the awakening of a Guardian Custode beneath the planet, these two dropships were used to ferry Fireteam Osiris to Apogee Station to hunt for the rogue Blue Team. Throughout the battle, more corporate Pelicans would engage the Prometheans' Z-1800 Phaetons in the skies above Meridian, with many being shot down.
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