8. DEPRECIATION AND IMPAIRMENT       1.1. - 31.12. 1.1. - 31.12.   2005 2004 Depreciation of tangible fixed assets     Buildings 5.4 3.5 Aircraft 69.0 80.9 Other equipment 8.3 12.4   82.7 96.8 Depreciation of intangible assets     Goodwill 0.0 1.5 Other intangible assets 8.0 5.8   8.0 7.3 Total 90.7 104.1 The Group has re-assessed the useful life of aircraft heavy maintenance. As a result of re-assessment the maintenance intervals of Airbus aircraft were lengthened. Depreciations of heavy maintenance reduced as a result of the re-assessment by 1.0 million euros compared to the earlier practice. The depreciation period of flight simulators has been changed to match the depreciation period of the corresponding aircraft. In the comparison year, an additional depreciation of 5 million euro was made for the fleet.