This could be part of the adventure. You will take X number of tonnes of locally produced good in exchange for repairing the power plant turboencabulator ( https://www.youtube.com/watch?v=Ac7G7xOG2Ag ) But kidding aside, a full cargo hold of goods as spec freight could be a good adventure hook for several sessions.
1: Party negotiates a contract for service
2: party engineer tries to repair problem
3: various issues arise and party tracks down or makes spare parts
4: gets paid in goods
5: party then tries to figure out the best location to sell spec freight
6: this happpens to be on the planet the GM has the next adventure planned
7: party has encounter on way to planet, pirates, spies, merchants trying to maintain monopoly etc.
And wash rinse repeat this scenario as the party repairs any damage to their ship that getting the goods to market created.