Europe's budget airlines faced fresh trouble on Monday (September 2) morning.

Ryanair, the region's biggest, enduring a second multi-day strike by its British-based pilots.

The airline says travelers should see minimal disruption.

But the stoppage is just the latest in a summer of discontent for the airline.

Industrial action by Spanish staff is also ongoing.

The problems come as Ryanair has a management reshuffle.

High-profile boss Michael O'Leary is set to become group head.

Veteran insider Eddie Wilson takes over as boss of Ryanair itself.

And he should find the labour unrest no surprise, as he's been in charge of talks with unions for the past two years.

Meanwhile, Ryanair rival Norwegian has asked bondholders for help with its heavy debts.

The airline wants to put back the repayment date on its bonds.

It's pledging valuable takeoff and landing slots at London Gatwick as security.

Norwegian's financial troubles have calmed in recent months.

But this year it has been battered by the grounding of its Boeing MAX jets.

After a sharp initial dip, Norwegian shares rose as much as five percent Monday on news of its debt plan.