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Fire Resistant Phosphate Ester Hydraulic Fluid for Aircraft
- Aerospace Standard
- AS1241D
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This document establishes the requirements for physical and chemical properties and the minimum tests to evaluate suitability of phosphate ester hydraulic fluids for use in aircraft systems where fire resistance is required. Additional tests may be specified by the qualifying agency to demonstrate compliance with their specific requirements. The "qualifying agency" will be defined herein to be the airframe manufacturer submitting certification approval for use of the fluid in a specific model airplane.
Fluids meeting the requirements of this specification may be approved by a qualifying agency for use on specific airplane models. Data used to show compliance to this specification can be used by the qualifying agency to show compliance to the applicable regulations for the appropriate certifying authority; e.g., FAA, EASA, etc.
Rationale
This revision incorporates a new fluid type, updates references and revises some tests. New requirements have been added and the dynamic seal test has been eliminated.
Recommended Content
Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Table 1 | Physical and chemical properties for new fluid | |
| Table 2 | Foam Limits for New Fluid | |
| Table 4 | Foam limits for mixtures | |
| Table 5 | Metals for hydrolytic stability test | |
| Table 6 | Metal specimen change limits | |
| Table 7 | Four ball wear test scar limits | |
| Table 8 | Pumping test fluid characteristic limits |
Issuing Committee
A-6C1 Fluids and Contamination Control Committee
A6C1 is responsible for the development of standards, processes, and practices related to Aerospace Fluids and Systems' cleanliness in aerospace engines, hydraulic systems and missiles, and the integration of these components for Commercial and Military air vehicles. The panel provides a forum for government engineers, prime contractors, and suppliers to exchange technical information, regulatory updates, recent technology developments, issues related to system development and in service operation and lessons learned.
Reference
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