FOREWORD

This document, prepared by EUROCAE Working Group 13 "Standards of Navigation Performance", was accepted by the Council of EUROCAE on April 2000.

EUROCAE is an international non-profit making organisation, Membership is open to European users and manufacturers of equipment for aeronautics, trade associations, national civil aviation administrations and, under certain conditions, non-European organisations. Its work programme is principally directed to the preparation of performance specifications and guidance documents for civil aviation equipment, for adoption and use at European and world-wide levels.

The findings of EUROCAE are resolved after discussion among its members and in co-operation with RTCA Inc., Washington DC, USA and/or the Society of Automotive Engineers (SAE), Warrendale PA, USA through their appropriate committees.

This document has been achieved jointly with RTCA SC-181 and is identical to RTCA DO-201A.

EUROCAE documents are recommendations only. EUROCAE is not an official body of the European Governments; its recommendations are valid as statements of official policy only when adopted by a particular or conference of governments.