A real melting pot awaits.
Airframe/Engine makers will be careful to change rules on Ash.
Airlines/State aviation authorities as above.
Insurance companies will be very interested.
Aircraft leasing companies will need to take stock.
With so little data being known about operations with Ash in the short and long term, keeping the skys quiet for a few more days until the weather helps out may be the very best and cheapest option.
But so much pressure from so many, the next few day will be very interesting to watch.
Safe flying to all.