ISO 22089-2009 PDF

Full title and description

ISO 22089:2009 — Aerospace — Hydraulic power transfer units — General specifications. Establishes general requirements, design and testing considerations for hydraulic Power Transfer Units (PTUs) used in aerospace applications (uni-directional and bi-directional PTUs).

Abstract

ISO 22089:2009 defines the general requirements for hydraulic Power Transfer Units (PTUs), covering both uni-directional and bi-directional PTUs. The standard is intended to be used together with application-specific detailed specifications that address the particular installation, performance and qualification needs.

General information

• Status: Published (International Standard; under systematic review at time of publication record).
• Publication date: February 2009 (Edition 1, 2009-02).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.080 — Aerospace fluid systems and components.
• Edition / version: Edition 1 (2009).
• Number of pages: 48 (ISO edition). Note: some national/adopted versions (for example BSI national publication) include additional national forewords and pagination.

Scope

This standard specifies general requirements, definitions and performance-related considerations for hydraulic Power Transfer Units (PTUs) used in aircraft and aerospace systems. It applies to design intent, functional description, operating modes (uni‑ and bi‑directional), interfaces, basic testing/qualification principles and documentation requirements, and is to be used alongside more detailed, application-specific specifications.

Key topics and requirements

• Definitions and classification of PTUs (uni-directional and bi-directional).
• General design and functional requirements for aerospace PTUs.
• Performance and operating characteristics (torque, speed, flow interaction).
• Qualification, acceptance and approval testing principles for PTUs.
• Interface, installation and mounting considerations for aircraft hydraulic systems.
• Materials, hydraulic fluid compatibility and environmental/temperature considerations.
• Documentation, marking, and certification/traceability requirements.
• Guidance to be used in conjunction with application-specific detail specifications and industry practice (references include SAE ARP guidance and related ISO fluid‑system standards).

Typical use and users

Used by aerospace OEMs, subsystem and component suppliers, design and systems engineers, qualification/test laboratories, certification authorities, and maintenance/repair organisations involved with aircraft hydraulic power and transmission systems where PTUs are installed. Also used by procurement and quality teams to specify minimum requirements for PTU procurement and acceptance.

Related standards

ISO 22089:2009 is typically referenced alongside other aerospace fluid-system and PTU-related documents and industry guidance, such as SAE ARP documents on PTU application and installation, and various ISO standards for fluid-system components (examples cited in vendor and catalog records include SAE ARP1280, SAE ARP4925 and related ISO coupling and fluid vocabulary standards). National adoptions (e.g., BS ISO 22089:2009) are materially identical but may add national forewords.

Keywords

hydraulic power transfer unit; PTU; aerospace; hydraulic systems; uni-directional; bi-directional; qualification; testing; ISO 22089:2009; aircraft hydraulic components.

FAQ

Q: What is this standard?

A: ISO 22089:2009 is an International Standard that sets out general specifications and requirements for hydraulic Power Transfer Units (PTUs) used in aerospace applications.

Q: What does it cover?

A: It covers general design and functional requirements, classification (uni‑ and bi‑directional), interface and installation considerations, and the principles for qualification and acceptance testing. It is intended to be used with more detailed, application-specific specifications.

Q: Who typically uses it?

A: Aerospace OEMs, component suppliers, systems and mechanical engineers, test/qualification laboratories, certification bodies and maintenance organisations involved in aircraft hydraulic systems and PTU integration.

Q: Is it current or superseded?

A: The ISO bibliographic record shows ISO 22089:2009 as the published edition (2009) and lists its status as published; the record indicates the document is subject to ISO's systematic review processes. There is no later ISO edition listed in the ISO bibliographic entry consulted. Users should check with their national standards body or ISO for any amendments or newer editions before relying on the standard for current procurement or compliance.

Q: Is it part of a series?

A: It belongs to the aerospace fluid systems domain (ICS 49.080) and is one of a set of standards and industry guidance documents covering aircraft hydraulic components and systems; it is referenced alongside related ISO and industry (e.g., SAE) documents rather than being a numbered multi‑part series.

Q: What are the key keywords?

A: Hydraulic power transfer unit, PTU, aerospace hydraulics, uni-directional, bi-directional, qualification, testing, ISO 22089:2009.