I agree there could be a risk - but then why not get out there and determine it? There is no measured maximum limit to particulates of this type in the air, surely if it was such a great threat to expensive machines they would know what safe levels are? I heard the guy from the Met office was saying some of the test flights didn't even have the right instruments to record the right data
I think we may find a lot of this has been a knee jerk reaction due to not having comprehensive information as to what to do. I know before planes have at least been able to fly around the ash - they seem to have never predicted it could cover such a wide area all at once.
Good for you and others to keep on going, best to keep on trying until the last possible moment.
Good news about them finally starting to bring some Brits home

I know I'm complaining but at least I'm safe at home (or rather work right now

) and only have a holiday to lose at worst.
I think tomorrow night we'll be purchasing train tickets for our 24 hour journey

But rather get there than not at all.