A colossal funding deficit in the Superannuation Scheme has Aer Lingus trying to shore it up with a €150 million plan and bottom dollar such an action would be open to legal challenge by Ryanair or the unmentionable one. So Aer Lingus appears to have to face up to the cost of a legal challenge or protracted industrial action. To that mix you'll also find Shareholder satisfaction will be as transient as a short spell of fine weather in an Irish summer.