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Based on performance this year, it seems that it would be a good idea to replace the weekly Avionics meetings with weekly sprints. Specifically this means that instead of holding a weekly meeting for an hour to check in with Avionics members and then expect them to do work on their own time, it would be better to hold a a longer (4 to 6 hour) meeting during which members work on their assigned tasks and deliver the update to the team via email. This way, the only thing that each member is responsible for doing on their own time is coming up with goals for the weeks sprint. This allows work to be concentrated and in an environment where maximum support can be provided. It also boosts camaraderie among subteam members.
Use Github for Project Tracking
Github offers a very good interface for tracking progress on both software and related hardware projects. It seems prudent to use this feature in the future to track active tasks on Avionics projects and to record the results of design reviews and project tasks and milestones. This would make project progress visible to the whole team and better help identify roadblocks.