I am only going on what I have read in the news.
Balfour Puts Exeter Airport Stake On Runway
Balfour Beatty to sell Exeter Airport - Telegraph
Balfour Beatty ?seeks bidders? for Exeter Airport stake | News | Construction News
Based on "reports" and the original post should ave read "reportedly selling there 60%....."
It's not like I just randomly made it up lol. Exeter airport will be fine anyways, if flybe weren't in such a finial position I could see them wanting to buy the stake.