13? Such as Apollo 13? Yep, there has been unluckys before. Launch as planned.
Given the lack of any problem with Soyuz 13, Soyuz T-13, and Soyuz TM-13, I don't see any reason to rename TMA-13.
TMA-81-A if we go by the shuttles way of skipping 13
I think in Korea is unlucky number 4. They skipped this number in Koreasat serie.
Unlucky numbers depend on culture group, which uses this.
The Arianespace V13 mission was a success. The V15 mission failed.
Atlas Centaur AC-13 was a success, as was its Surveyor 5 lunar lander.
Delta 13 was successful. It carried Explorer 14. Don't ask what happened to Explorer 13.

- Ed Kyle