I think it more likely an issue with Mavericks networking.
Do you have ipv6 set to link-local for the wireless client in the MBA??
This is now essential.. and automatic doesn't cut it. Set to the actual ipv6 requirement.
This is not unusual problem BTW..
For mavericks I would also ensure your TC has all naming that is short, no spaces and pure alphanumeric. That includes the TC itself plus the wireless.