ISO 9788:2017 エアカーゴ—ダブルスタッドタイダウンフィッティング—設計およびテスト要件 | ページ 2

Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 9, Air cargo and ground equipment.

This second edition cancels and replaces the first edition (ISO 9788:1990), which has been technically revised.

The main changes compared to the previous edition are as follows:

• change in title to reflect the amended scope;
• expansion of scope to cover complete double-stud fittings, regardless of material used, instead of only their cast components;
• new Figure 4, examples of ring shapes;
• drawing attention in 4.2.4 to zinc chromate’s toxicity; and
• addition of a new Clause 8 on Quality Control.

Introduction

This document specifies the design, performance and testing requirements for double stud tie-down fittings intended to be used for cargo restraint on board civil transport aircraft. At the time of publication, no formal Civil Aviation Authority approval (certification) procedure applicable to tie-down fittings.

The civil aviation requirements referred to in this document are those concerning certification of transport aircraft and appliances to be installed aboard them, and constitute the set of design and operation requirements internationally agreed in application of International Civil Aviation Organization (ICAO) Annexes 6, Operation of aircraft and 8, Airworthiness of aircraft, to the Convention on International Civil Aviation. This document provides one means of compliance for double stud tie-down fittings.

Throughout this document, the minimum essential criteria are identified by use of the key word “shall”. Recommended criteria are identified by use of the key word “should” and, while not mandatory, are considered to be of primary importance in providing safe restraint arrangements on board aircraft. Deviation from recommended criteria should only occur after careful consideration and thorough service evaluation have shown alternate methods to provide an equivalent level of safety.

Dimensions and tolerances are expressed in millimetres.

1 Scope

This document specifies the geometry, performance and testing requirements for a double stud tie-down fitting assembly, having a load capacity of 22 250 N (5 000 lbf), when installed in rail or track conforming to ISO 7166.

Other materials than those specified can alternatively be used, provided the performance and testing requirements of this document are complied with.

Double stud tie-down fittings are intended to be used as either:

• a) loose items to be attached to an air cargo pallet’s track or an aircraft’s floor rail in order to constitute a tie-down arrangement together with cargo restraint straps meeting the requirements of ISO 16049-1 or cargo restraint slings (steel cables) meeting the requirements of ISO 20291-1,
• b) or permanently attached tie-down components of pallet nets meeting the requirements of ISO 4115 or ISO 4170.

In this case ここで, deemed appropriate, the stud geometry can alternatively conform to ISO 7166, and the breaking strength requirement can be limited to the value necessary to meet the net’s airworthiness approval/certification in accordance with ISO 21100.

Single stud tie-down fittings are not covered by this document.

They nevertheless can ここで, deemed appropriate, use the same stud geometry alternatively to the stud configuration specified in applicable ISO 7166.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 10254 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography