You have two choices :

1. If you have done the leg n°6 to : LFSB - Bâle-Mulhouse, continue the tour toward keg n°7 by flying LFSB - Bâle-Mulhouse -> LFBT Tarbes Lourdes-Pyrénées.
2. If you haven't done the leg n°6, join : LFBT Tarbes Lourdes-Pyrénées from the airport of your own choice.

Attention : this leg refers to the event : "Go to maintenance!", available here.