Aircraft Maintenance Jacks - General Requirements
This document covers the general requirements for hydraulic aircraft jacks. It can be applied to tripod, unipod, and axle jacks that may be used on open ramp areas as well as in the aircraft hangar.
Throughout this Aerospace Standard, the minimum essential criteria are identified by the key word “shall”. Recommended criteria are identified by use of the key word “should”. 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.
The term “vertical load” throughout this Aerospace Standard is defined as the force imposed on the aircraft jack at the airframe jack point.
Jacks markings requirements completion and allowed manual forces inclusion. Harmonization of requirements with ISO and EN related documents. Removal of untraceable requirement and formula and replacement of a more wide wording. References and minor editorial updates.
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Fluid power systems
Tools and equipment
Maintenance, repair, and overhaul (MRO)
Also known as: SAE AS 4775
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