Aer Lingus can't secure investment as long as this pension issue is hanging over it. Who would invest in an airline that may or may not be liable to pay hundreds of millions into a €750mln pension deficit? Once that uncertainty is removed, they will have no problem securing investment in the airline which will benefit all shareholders.
What investment exactly are you talking of ?
What return are Aer Lingus guaranteeing to the investors ?
How are shareholders expected to benefit if the company still has to make the payments to investors even though the returns do not turn out as planned, i.e. New bases etc....