The July 2004 issue of the official journal of the International Civil Aviation Organization (ICAO) carries an article from the Observatory on quality management system. The Observatory is one of the first in the world awarded an ISO 9001:2000 certification for its weather services for international air navigation. An invited article, "ISO Compatible Quality Management System Enhances Aviation Weather Services", is one of the steps taken by ICAO to show how to implement a quality management system for aviation weather services and to demonstrate to the aviation community how such a system could help provide quality, timely and responsive weather services. The article can be viewed on the ICAO website at http://www.icao.int/icao/en/jr/2004/5904.djvu or on the Observatory's website at http://www.weather.gov.hk/publica/reprint/r551.pdf.