ISO INTERNATIONAL STANDARD 9662 First edition 1994-02-15 Aircraft equipment -- Environmental and operating conditions for airborne equipment Humidity, temperature and pressure tests Equipements aéronautiques --- Conditions d'environnement et de fonctionnement pour les équipements embarqués Essais d'humidité, detempérature etdepression ISO Reference number ISO 9662 1994(E) Copyright lntenatioal Organizatin for Standadization No reproduction or networking permitted without license from IHS Not for Resale ISO9662:1994(E) Foreword ISO (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (iEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 9662 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 5, Environ- mental and operational conditions for aircraft equipment. ISO1994 All rights reserved Unless otherwise specified, no part of this publication may be reproduced microfilm, without permission in writing from the publisher. Internationai Organization for Standardization Case Postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland No reproduction or networking permitted without license from IHS Not for Resale ISO ISO 9662:1994(E) Introduction This International Standard is intended to apply primarily to equipment in pheric conditions result in frosting, external and internal condensation and moisture ingress. Equipment will experience these conditions as the aircraft descends from low temperature at high altitude into a warmer atmosphere. This is par- ingress of moisture. Copyriaht lnlenational Organizatinfor Standadization No reproduction or networking permitted without license from IHS Not for Resale