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This SAE Aerospace Standard (AS) defines interface configurations for the ground air conditioning service connection on commercial transport aircraft. In addition, it defines the clearances required to accommodate the connection of ground air conditioning hose couplings. Two types of service connections are included. The Type A connection (Figure 1) is a slotted ring with integral locking pads and is comparable to the MS33562 connection. The Type B connection (Figure 2) is a flanged tube with external locking lugs (Figure 3). The Type B connection has the same interface dimensional requirements as the Type A connection.

This Recommended Practice covers the following categories: a Basic engine rating (requirements for) - (Para. 3) b Suggested minimum conditions for selection - (Para. 4) c Recommended horsepower rating reductions - (Para. 5) d Special considerations - (Para. 6) e Recommended safety devices - (Para. 7) f Recommended minimum instrumentation - (Para. 8) g Recommended selection support data - (Para. 9) h Recommended usage of ARP - (Para. 10)

The scope of this recommended practice limits itself to the seven different services mentioned in 1.2. It has focused on these aircraft services because:

This recommended practice outlines the general requirements of a continuous duty, electric motor-driven brushless alternator unit for supplying 400 Hz electrical power to high performance commercial transport aircraft. This specification is for a single motor-generator set with one or two outputs. The generator set will generate at the aircraft voltage of 115/200 volts. This unit may be used in a central system of small size or in hangar or electronic shop applications. Power characteristics of this unit at the receptacle will meet MIL-Standard-704 requirements. Other limits which are necessary to meet specific conditions must be specified by the purchaser.

The AIR is presented in two parts. The first part is simply a summarization of design factors that must be considered in establishing performance requirements. The second part consists of various tabulated design data and explanatory examples.

This Aerospace Recommended Practice (ARP) outlines the basic general design considerations for aircraft towbars.

This recommended practice describes an industrial battery, lead acid type, for use in electric powered ground support equipment.

This AIR is intended to be concerned with fleet programs rather than programs for individual units. Technical and administrative considerations in developing an approach to a program will be suggested Organization of material possibly wanted in the form of a detailed specification for airline rebuilder communication is reviewed.

The protective device hereinafter called a "fender," is intended to serve its purpose during normal aircraft servicing and prevent damage during docking contact rather than agressive impact.

This Recommended Practice outlines the basic general design requirements for powered mobile ground support equipment used in the civil air transport industry. It is intended to assist the airlines in standardizing requirements for various configurations of equipment.

This document considers the following major areas: 1 Major components and their ratings 2 Selection criteria for optimum design balance for electrical systems 3 Effects of operating conditions and environment on both maintenance and life of components 4 Trouble signals -- their diagnosis and cure

This report is applicable to any type of aerospace ground support vehicle, powered, or unpowered.

The AIR is presented in two parts. The first part is simply a summarization of design factors that must be considered in establishing performance requirements. The second part consists of various tabulated design data and explanatory examples.

This Aerospace Recommended Practice includes the following areas: basis for system requirements; selection of materials coupled with hazards and safety; configuration of design; system operation; and evalua tion testing.

This Recommended Practice outlines the general requirements for a transportable self-contained, continuous duty, diesel engine driven brushless alternator unit for supplying 400-Hertz electrical power to high performance commercial transport aircraft. It is intended to assist the airlines in standardardizing recommendations for various sizes and configurations of equipment and it is a guide for the preparation of detailed specifications by the purchaser. The unit is primarily intended to supply power to the aircraft during passenger loading and unloading, and during servicing operations at airports throughout the world. The combination of the equipment specified herein and the interconnecting cable(s) between the 400-Hertz alternator and the aircraft shall provide power characteristics at the aircraft receptacle which meet MIL-STD-704A requirements for Category "B" equipment. Other limits which are necessary to meet specific conditions must be specified by the purchaser.