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Standard

Design of Aircraft Deicing Facilities

2018-02-15
CURRENT
ARP4902C
This document provides information and guidance material to assist in assessing the need for and feasibility of developing deicing facilities, the planning (size and location) and design of deicing facilities, and assessing environmental considerations and operational considerations associated with de-icing facilities. The document presents relevant information necessary to define the need for a deicing facility and factors influencing its size, location, and operation. The determination of the need for deicing facilities rests with Airports. Although this document intends to provide information to airport operator and deicing facility planner/designer, all stakeholders, including deicing service providers, should be involved in the development process.
Standard

The Measurement of Engine Thrust in an Altitude Test Facility

2018-02-14
CURRENT
AIR5771A
This report covers engine tests performed in Altitude Test Facilities (ATFs) with the primary purpose of determining steady state thrust at simulated altitude flight conditions as part of the in-flight thrust determination process. As such it is complementary to AIR1703 and AIR5450, published by the SAE E-33 Technical Committee. The gross thrust determined using such tests may be used to generate other thrust-related parameters that are frequently applied in the assessment of propulsion system performance. For example: net thrust, specific thrust, and exhaust nozzle coefficients. The report provides a general description of ATFs including all the major features. These are: • Test cell air supply system. This controls the inlet pressure and includes flow straightening, humidity and temperature conditioning. • Air inlet duct and slip joint.
Standard

Fault/Failure Analysis for Digital Systems and Equipment

2018-02-14
CURRENT
ARP1834B
ARP1834 provides general guidance for the selection, approach to, and performance of various kinds of F/FA of digital systems and equipment. Its prime objective is to present several industry- acceptable, cost-effective methods for identifying, analyzing, and documenting digital-equipment failure modes and their effects. The analysis techniques and considerations presented here are directed to digital-equipment hardware faults and failures exclusively. ARP 1834 is not intended as an exhaustive treatment of the enormously complex process involved in the analytical failure evaluation of complete digital systems, nor as a universally applicable, definitive listing of the necessary and sufficient steps and actions for such evaluation. ARP4761 provides updated methods and processes for use on civil aircraft safety assessment. When analyzing these types of systems, ARP4761 should be used in lieu of the ARP.
Standard

Fault/Failure Analysis Procedure

2018-02-14
CURRENT
ARP926C
This document provides guidance in performing Failure/Fault Analyses in relatively low complexity systems. Methodologies and processes are presented and described for accomplishing Failure/Fault Analyses. ARP4761 provides updated methods and processes for use on civil aircraft safety assessment. When analyzing these types of systems, ARP4761 should be used in lieu of this ARP.
Standard

Aircraft Ground Support Equipment – General Requirements

2018-02-12
CURRENT
ARP1247E
This SAE Aerospace Recommended Practice (ARP) outlines the basic general design requirements for ground support equipment used in the civil air transport industry. It is intended to assist in standardizing requirements for various configurations of equipment. For procurement of equipment, sections of this document should be specified with due consideration of the functional and environmental requirements of the equipment, and to the relative cost of satisfying those requirements.
Standard

Aviator's Breathing Oxygen Purity Standard

2018-02-11
CURRENT
AS8010D
This document defines the minimum degree of purity and maximum levels of certain deleterious impurities allowable for aviator's breathing oxygen at the point of manufacture or generation. It covers gaseous, liquid, and chemically generated oxygen, and oxygen supplied by in situ concentration and in situ electrolysis. Different limits are established for oxygen from different sources, in recognition of differences in the ways the oxygen is stored, dispensed, and utilized, taking into account the safety of the user. These limits are not intended to specifically reflect upon the relative capabilities or merits of various technologies. Procurement documents may specify more stringent limits, where required for specific applications. Medical oxygen is not covered by this standard. In the United States, medical oxygen is a prescription drug and complies with the United States Pharmacopoeia (USP).
Standard

Bolts and Screws, Nickel Alloy, UNS N07001, Tensile Strength 165 ksi, Corrosion and Heat Resistant, Procurement Specification

2018-02-07
CURRENT
AS7471H
This procurement specification covers bolts and screws made from a corrosion and heat resistant, age hardenable nickel base alloy of the type identified under the Unified Numbering System as UNS N07001. The following specification designations and their properties are covered: AS7471: 165 ksi minimum ultimate tensile strength at room temperature. 75 ksi stress-rupture strength at 1350 °F. AS7471-1: 165 ksi minimum ultimate tensile strength at room temperature. 99 ksi minimum ultimate shear strength at room temperature.
Standard

Modification or Replacement of Components on Dynamically Certified Seat Systems

2018-02-06
CURRENT
ARP5497A
This document outlines the engineering evaluation appropriate for modifying or replacing components of a previously certified seat when the certification process is based on qualification to the requirements of AS8049, which includes dynamic testing. The engineering evaluation presented in this document may be used to determine if a modification (including replacement of a component) is a minor change with respect to meeting the dynamic testing requirements described in AS8049. Whenever a modification is considered, the ability to meet all requirements of the applicable Federal Aviation Regulation (FAR) must be verified. For example, this would include the capability to meet requirements such as flammability and flotation. Analysis and/or test data supporting the ability of the new materials and/or configuration to meet the applicable requirements must be submitted with the change documentation.
Standard

New and Newly Retreaded Tire Appearance

2018-02-06
CURRENT
ARP6307
This document is for establishing and addressing anomalies on appearance of new and newly retreaded tires prior to installation on aircraft. It is intended to use cosmetics as well as functionality to make a determination of acceptability. However, if cosmetic appearance is not a requirement, use the inspection criteria from ARP6225, Aircraft Tire Removal Criteria. This ARP does not supersede (E)TSO-C62 minimum requirements including marking requirements.
Standard

Aerospace Rod Scraper Gland Design Standard

2018-02-06
CURRENT
AS4088E
This SAE Aerospace Standard (AS) defines gland details for scrapers for rod diameters from 1/4 to 15-1/2 inch (6.35 to 393.70 mm) inclusive, corresponding to AS568 O-ring Dash No. sizes -108/-111, -206/-222, -325/-349, and -425/-460. The gland details herein allow the use of more stable, efficient and reliable scraper devices than MS33675 glands. NOTE: Scraper configurations are not specified in this document.
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