A quick update on the Vulcan XH558 . Two of the engines were damaged beyond repair whilst it was taxiiing for take off . It would appear that two bags of silica gel dessicant [used to keep the engines dry when not in use] were not removed prior to start up . These were ingested & blew the turbine blades . The Vulcan uses the Olympus 202 engines & these are VERY difficult to find in signed off for flight condition . The only two spares that the Vulcan trust have are now being prepared for fitting & let's hope all goes well .