ISO TR 21891-2017 PDF

Full title and description

ISO/TR 21891:2017 — Aerospace electrical requirements — Sleeves and moulded shapes — Specifications for aircraft use. This technical report brings together, in a single list, standards for insulation and/or mechanical and environmental protection sleeves and heat‑shrink moulded shapes that have been determined as suitable for use on aircraft; the range covered includes heat‑shrink, extruded (non‑heat‑shrink) and textile sleeves.

Abstract

ISO/TR 21891:2017 compiles and identifies existing standards considered suitable for aircraft applications for protective sleeves and moulded shapes used in aerospace electrical installations. It does not itself introduce new test methods but provides a consolidated reference list to support selection and procurement of insulation and protective sleeve products for aircraft use.

General information

• Status: Published (current technical report).
• Publication date: July 2017 (2017-07).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.060 (Aerospace electrical equipment and systems).
• Edition / version: Edition 1 (2017).
• Number of pages: 8 pages (technical report).

Scope

Defines the scope of the technical report as a consolidated list of standards and specifications judged suitable for aircraft use relating to insulation and protective sleeves and heat‑shrink moulded shapes. It covers sleeve types (heat‑shrink, extruded/non‑heat‑shrink and textile) and identifies standards relevant to insulation, mechanical protection and environmental resistance for wiring and harness applications in aircraft installations. The report is intended to support selection and procurement rather than to replace individual normative product standards.

Key topics and requirements

• Consolidated list of standards judged suitable for aircraft use for protective sleeves and moulded shapes.
• Coverage of sleeve types: heat‑shrink, extruded (non‑heat‑shrink) and textile sleeves.
• Focus on insulation, mechanical protection and environmental resistance requirements as they apply to aerospace wiring and harnesses.
• Intended as a reference for selection/procurement; does not itself specify new test procedures or performance limits beyond referencing existing standards.
• Produced under ISO/TC 20/SC 1 (aerospace electrical requirements) to align with aircraft industry needs.

Typical use and users

Used by aerospace electrical designers, wiring‑harness manufacturers, components suppliers, procurement and quality assurance teams, aircraft maintenance organisations and certification bodies as a reference to identify existing sleeve and moulded‑shape standards that are appropriate for aircraft applications.

Related standards

Related work is managed under ISO/TC 20/SC 1 and other aerospace electrical standards. Users commonly consult the individual product and test standards referenced within this TR when specifying materials (for example, standards for heat‑shrinkable tubing, textile sleeving and extruded insulating sleeves) as well as associated aerospace wiring and connector standards.

Keywords

aerospace; electrical requirements; sleeves; moulded shapes; heat‑shrink; extruded sleeves; textile sleeving; insulation; aircraft wiring; technical report.

FAQ

Q: What is this standard?

A: ISO/TR 21891:2017 is a technical report that compiles and lists standards judged suitable for use on aircraft for insulation and/or mechanical/environmental protection sleeves and heat‑shrink moulded shapes.

Q: What does it cover?

A: It covers the identification of appropriate standards for sleeve and moulded‑shape products used in aerospace electrical installations, including heat‑shrink, extruded (non‑heat‑shrink) and textile sleeves; it is a reference list to aid selection and procurement rather than a specification that replaces the referenced product standards.

Q: Who typically uses it?

A: Aerospace electrical designers, harness manufacturers and suppliers, procurement and QA teams, maintenance organisations and certification authorities use the TR as a consolidated reference to find applicable sleeve and moulded‑shape standards for aircraft applications.

Q: Is it current or superseded?

A: As published, ISO/TR 21891:2017 is a current technical report (published July 2017). Users should check with their national standards body or ISO for any later revisions or confirmations if up‑to‑date status is required.

Q: Is it part of a series?

A: It is a stand‑alone ISO Technical Report produced under ISO/TC 20/SC 1 that complements other aerospace electrical standards; it groups references to related product standards rather than forming a multi‑part normative series itself.

Q: What are the key keywords?

A: Aerospace, sleeves, heat‑shrink, moulded shapes, insulation, textile sleeving, extruded sleeves, aircraft wiring, protective sleeving.