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The purpose of this AIR is to provide a comprehensive description document that displays various examples of low pressure seals and wipers utilized within mechanical and electromechanical actuators. The document is intended as an overview for those specifying or designing actuators in order to compare existing solutions as reference for implementation.

The document provides a definition of skew and disconnect occuring in high lift systems in flight controls including their hazard assessment, describes generic solutions and provides a for specifying requirements.

Scope: This Aerospace Recommended Practice (ARP) provides guidelines for specifying dielectric withstanding strength and insulation resistance design and test requirements for aircraft line replaceable units (LRU's) used within a flight control and/or a utility system. 1.1 Purpose The testing is intended to verify that an LRU can operate safely at its rated voltage and withstand momentary over potentials due to switching, troubleshooting testing, surges, etc.. The testing is also intended to verify adequate design margin of the insulation system and detect workmanship problems.

This SAE Aerospace Recommended Practice (ARP) is intended as a guide to define the requirements for aerospace hydraulic shuttle valves, including details pertinent to the design, performance, fabrication, and testing of the shuttle valves.

This Aerospace Recommended Practice (ARP) offers guidelines for specifying servoloop pressure feedback transducers for use in hydraulic actuation for servosystems.

1. SCOPE This Aerospace Recommended Practice (ARP) provides recommendations for the design and test requirements for hydraulic priority valves. The hydraulic priority valve is intended for use in a civil or a military aircraft hydraulic system with a rated system pressure up to 5000 psi (34500 kPa). 1.1 Purpose The recommended requirements contained in this document are compiled for inclusion in a Procurement Specification for a hydraulic priority valve. NOTE: The recommended requirements in this ARP should be reviewed by the Purchaser or the Contractor and only those requirements that are applicable for a specific application should be incorporated in the Procurement Specification. 1.2 Classification The hydraulic priority valve types covered by this ARP are: • The line-mounted type - a valve with standard fitting ends • The cartridge type - a cylindrical valve with O-ring glands for mounting in a manifold, for example

Recommendation Guidelines and Practices for the Design and Validation of EHA Thermal Management Considerations, particularly for Low Temperature Operation.

This Aerospace Recommended Practice (ARP) provides guidance on methods for system level pump ripple and pulsation testing. Covered are pump testing versus system pulsation testing, test conditions, instrumentation and data collection, data reduction and analysis, and resolution of issues identified during testing.

This specification covers a two-component air-curing resin-baue material in the form of a paste or putty, suitable for application by spatula or putty knife.

This specification covers a two-component air-curing resin-baue material in the form of a paste or putty, suitable for application by spatula or putty knife.

This specification covers a two-component air-curing resin-base material in the form of a paste or putty, suitable for application by spatula or putty knife.

This specification covers a two-component air-curing, aluminum-powder-filled, epoxy-resin-base material in the form of a paste or putty, suitable for application by spatula or putty-knife.

This specification covers a two-component air-curing, aluminum-powder-filled, epoxy-resin-base material in the form of a paste or putty, suitable for application by spatula or putty-knife.

This specification covers a two-component air-curing, aluminum-powder-filled, epoxy-resin-base material in the form of a paste or putty, suitable for application by spatula or putty-knife.

This SAE Aerospace Standard describes the system used by passenger boarding stairs (PBS) mobile passenger boarding ramps (PBS) and boarding bridges (PBB) to inform on-board cabin crew about the docking status of the PBS/PBR/PBB and whether it is positioned such that it is safe to open the aircraft door. Current practice calls for the PBS/PBR/PBB operator to knock on the aircraft door to inform the cabin crew that it is safe to open the aircraft door. New technologies being incorporated into PBS/PBR/PBB such as remote control systems and autonomous driving vehicles are entering the market. As such, new/updated controls and/or procedures are necessary to ensure continuing safe operations.

This SAE Metric Aerospace Standard (MA) defines the requirements for heavy-duty polytetrafluoroethylene (PTFE) lined, para-aramid reinforced, hose assembly suitable for use in 135 °C, 34,500 kPa, aircraft and missile hydraulic fluid systems.

The purpose of this document is to establish the requirements for Real-Time Communication Protocols (RTCP). Systems for real-time applications are characterized by the presence of hard deadlines where failure to meet a deadline must be considered a system fault. These requirements have been driven predominantly, but not exclusively, by aerospace type military platforms and commercial aircraft, but are generally applicable to any distributed, real-time, control systems. These requirements are primarily targeted for the Transport and Network Layers of peer to peer protocols, as referenced in the Open System Interconnect Reference Model (2.2.1 and 2.2.2), developed by the International Standards Organization (ISO). These requirements are intended to complement SAE AS4074 (2.1.1) and AS4075 (2.1.2), and future SAE communications standards.

The purpose of this document is to establish the requirements for Real-Time Communication Protocols (RTCP). Systems for real-time applications are characterized by the presence of hard deadlines where failure to meet a deadline must be considered a system fault. These requirements have been driven predominantly, but not exclusively, by aerospace type military platforms and commercial aircraft, but are generally applicable to any distributed, real-time, control systems. These requirements are primarily targeted for the Transport and Network Layers of peer to peer protocols, as referenced in the Open System Interconnect Reference Model (2.2.1 and 2.2.2), developed by the International Standards Organization (ISO). These requirements are intended to complement SAE AS4074 (2.1.1) and AS4075 (2.1.2), and future SAE communications standards.

This recommended practice applies to vibration monitoring systems for rotorcraft and fixed-wing drive trains, airframes, propulsion systems, electric power generators, and flight control systems. It addresses all aspects of metrics, including what to measure, how to measure, and how to evaluate the results.