Approval of translation has been done to best knowledge and judgement - in any case the original text in German language and the metric units (SI-system) are authoritative.
For relevant Airworthiness Directives (AD) see Austro Control Website and also check with your local civil aviation authority (e.g. EASA, FAA, TC, ...).
The documents are available and may be downloaded in Adobe pdf format. If you encounter difficulties with the pdf-files, make sure to have the latest updates installed for your version of Adobe® Reader®.