Latest:
"We are happy to report that early ground running tests to XH558's replacement engines have gone well. Over the weekend we started and ran both engines, which showed up a hydraulic leak and a couple of other minor leaks. This was a major milestone as the new No.2 engine had not been run for over 31 years.
These leaks have now been addressed and both of the engines were successfully run throughout their full power range on Monday. The team will now have to adjust certain required settings such as the idle and maximum RPMs today and possibly on into Wednesday. If no issues arise, we will then be ready to move on to the next stage, which will be the testing of the auxiliaries such as the hydraulics and electrics.
We hope soon to have news on an expected date for a test flight, but this is determined by an external review process. Please make sure you subscribe to our Twitter or Facebook pages or monitor our home page 'latest news' just in case we are able to pull forward any announcement. See the links at the bottom or click here.
We would confirm that we are not expecting to be at RAF Waddington this coming weekend, for which, once again, we are extremely sorry.
One of our new engines is zero-timed, having been carefully kept in a dry environment in a sealed bag since last tested in 1980. It has been subjected to a regular maintenance regime that has kept all parts suitably inhibited and lubricated. It was installed on the aircraft last week, and started up on Saturday, more than 31 years after last being run.
We also had good news on Friday (arriving just too late for our newsletter copy deadline) that our 'Permit to Fly' has been received and renewed, right the way through to June 2013.
Of course, this proves that the various aircraft systems, flight controls and structure of the aircraft have all been maintained and tested to meet the stringent standards expected by the UK Civil Aviation Authority. Just as soon as we have the replacement engines approved and fully tested, we shall be able to begin display practice."
