From Glue Tools:
With Glue Tools' ARRIRAW AMA plugin, you can load and play native ".ari" raw files directly inside Avid Media Composer without rendering or transcoding. The ARRIRAW files will play back as if they were always natively supported by Avid.
As the footage is completely raw, you have full access to the meta data and the color science that the camera hardware uses. You can modify the color of each individual shot non-destrucively, leaving the original raw files unchanged. This plugin will perform all of the importing, playback, debayer, white balancing, and color correction functions to the ARRIRAW image sequence.
This plugin supports Avid Media Composer 7.0 or later.