I've just been reading on the CAA website that:
“The major barrier to resuming flight has been understanding tolerance levels of aircraft to ash. Manufacturers have now agreed increased tolerance levels in low ash density areas.”
and
"The CAA’s Revised Airspace Guidance will be based on new engine ash tolerance levels and will apply to low ash density areas identified by the Met Office. This information will be circulated on a six hourly basis. Airspace where eash levels exceed this new limit will be no fly zones." (
UK?S INDEPENDENT AVIATION REGULATOR ISSUES GUIDANCE TO OPEN AIRSPACE WITH SAFETY RESTRICTIONS | CAA Newsroom | CAA)
Has anyone been able to find charts of these areas issued by the Met Office? At the moment all I can find is the usual VAAC charts (
http://www.metoffice.gov.uk/aviation...1271914184.png). Further, does anyone know which engine manufacturers have agreed ash tolerance levels or is it assumed to be all of them?