Airline company Flybe, which operates many flights out of Southampton, has announced it has put itself up for sale.
It says the decision follows battles against challenging conditions in the aviation industry.
The group has hired Evercore as an adviser to help with the review and sales process.
It comes just weeks after Flybe warned over profits following easing demand and a £29 million hit from rising fuel costs and the weak pound.
Prospect represents several hundred FlyBe staff.