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External Hydraulic Fluid Leakage Definition for Landing Gear Shock Absorbers
- Aerospace Standard
- ARP6408
- Reaffirmed
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
The purpose of this SAE Aerospace Recommended Practice (ARP) is to provide a practical definition of external hydraulic fluid leakage exhibited by landing gear shock absorbers/struts. The definition will outline normal (acceptable weepage) and excessive leakage (unacceptable leakage) of shock absorbers/struts that is measurable. The definition of leakage is applicable to new gear assemblies, refurbished/remanufactured (overhauled) shock absorbers/struts, leakage of shock absorbers/struts encountered during acceptance flights, newly delivered and in-service aircraft. This ARP is intended to provide guidelines for acceptable leakage of landing gear shock absorbers/struts between the ambient temperatures of -65 °F (-54 °C) and 130 °F (54 °C) and to outline the procedure for measuring such leakage. The specific limits that are applied to any particular aircraft shall be adjusted by the aircraft manufacturer before inclusion in the applicable maintenance manual.
Rationale
A clear understanding of leakage definition will result in minimizing what is often the unnecessary removal of landing gear shock absorbers from an aircraft. The leakage definitions are intended to assess and control the quality, assembly and proper functioning of landing gear shock absorbers/struts in service.
ARP6408 has been reaffirmed to comply with the SAE Five-Year Review policy.
Recommended Content
Aerospace Standard | Placarding of Aircraft Hydraulic Equipment to Identify Phosphate Ester Fluid Compatibility |
Aerospace Standard | External Hydraulic Leakage for In-Service Components |
Technical Paper | Damage Tolerance Assessment of CASA Landing Gear |
Data Sets - Support Documents
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Unnamed Dataset 1 |
Issuing Committee
Reference
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