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Standard

Guidelines for Repair Process Evaluation of Aluminum Bonded Structure

2024-05-24
CURRENT
AIR6291A
This SAE Aerospace Information Report (AIR) is intended to be used as a process verification guide for evaluating implementation of key factors in repair of metal bond parts or assemblies in a repair shop environment. This guide is to be used in conjunction with a regulatory approved and substantiated repair and is intended to promote consistency and reliability.
Standard

Composite and Bonded Structure Inspector: Training Document

2023-10-06
CURRENT
AIR5279A
This document provides recommendations concerning the minimum knowledge and skill guidelines for a composite and metal bond repair inspector. Teaching levels have been assigned to this curriculum to define the knowledge, skills and abilities needed to inspect repairs. Minimum hours of instruction have been provided to ensure adequate lecture and laboratory coverage of all subject matter. These minimums may be exceeded, and may include an increase in the total number of training hours and/or increases in the teaching levels.
Standard

Carbon Fiber Fabric Repair Prepreg, 125°C (250°F) Vacuum Curing Part 1 - General Requirements

2023-08-14
WIP
AMS3970/1B
AMS 3970/1 gives information about the technical requirements and qualification procedure for carbon fiber fabric epoxy prepreg used for repair of carbon fiber reinforced epoxy structures. The prepreg system may include a film adhesive to be applied in a co-curing process with the prepreg for joint and sandwich bonding. The need for a film adhesive shall be established during screening tests.
Standard

Carbon Fiber Fabric Repair Prepreg, 125°C (250°F) Vacuum Curing Part 2 - Qualification Program for Fiber, Fabric, Resin and Film Adhesive

2023-08-14
WIP
AMS3970/2B
AMS 3970/2 gives specific information about the qualification program for carbon fiber reinforced epoxy structural repair prepreg systems, applicable for 120 °C (250 °F) vacuum curing. The prepreg system may include an epoxy film adhesive to be applied in a co-curing process with the prepreg for joint and sandwich bonding. The need for a film adhesive shall be established during screening tests.
Standard

Impregnation of Dry Fabric and Ply Lay-Up

2023-08-14
CURRENT
ARP5319
This SAE Aerospace Recommended Practice (ARP) describes and gives general guidelines on use and applicability of standard methods for impregnating dry fabric and lay-up of the impregnated plies. The methods of impregnating dry fabric and ply lay-up described in this document have specific application and are not interchangeable. The methods should only be used when specified in an approved repair procedure or with the agreement of the Original Equipment Manufacturer (OEM) or regulatory authority.
Standard

Vacuum Bagging of Thermosetting Composite and Metalbond Repairs

2023-08-14
CURRENT
ARP5143A
This Aerospace Recommended Practice (ARP) describes methods of vacuum bagging, a process used to apply pressure in adhesive bonding and heat curing of thermosetting composite materials and metalbond for commercial aircraft parts. If this document is used for the vacuum bagging of other than thermosetting composite materials and metalbond, the fitness for this purpose must be determined by the user. The methods shall only be used when specified in an approved Repair Document or with the agreement of the Original Equipment Manufacturer (OEM).
Standard

Heat Application for Thermosetting Resin Curing

2023-08-14
CURRENT
ARP5144A
This SAE Aerospace Recommended Practice (ARP) describes standard methods of heat application to cure thermosetting resins for commercial aircraft composite repairs. The methods described in this document shall only be used when specified in an approved repair document or with the agreement of the Original Equipment Manufacturer (OEM) or regulatory authority.
Standard

Carbon Fiber Fabric Repair Prepreg, 120 °C (250 °F) Vacuum Curing Part 6 - Material Specification: Carbon Fiber Fabric Reinforced Epoxy Prepreg for Repair, Plain Weave Fabric, 193 g/m2, Adhesive Film for Repair and Non-Structural Glass Fiber Fabric Reinforced Epoxy Prepreg, 105 g/m2

2023-08-14
WIP
AMS3970/6A
This Material Specification defines the requirements of carbon fiber reinforced epoxy prepreg for repair, 120 °C (250 °F) Vacuum curing, Plain Weave Fabric, 193 g/m₂ and a companion non-structural glass fiber fabric reinforced epoxy prepreg, 105 g/m₂, qualified according to AMS3970/1 and AMS3970/2 for aerospace application. The prepreg system may include an epoxy film adhesive to be applied in a co-curing process with the prepreg for joint and sandwich bonding. The need for a film adhesive shall be established during screening tests. If included, the requirements to be met by the adhesive are also defined in this document.
Standard

Core Restoration of Thermosetting Composite Components

2023-08-08
WIP
ARP4991B
This SAE Aerospace Recommended Practice (ARP) describes standard methods for restoring damaged core on commercial aircraft sandwich structures. The methods shall only be used when specified in an approved repair procedure or with the agreement of the Original Equipment Manufacturer (OEM) or regulatory authority. The repair materials shall be defined in the approved repairs referencing these methods.
Standard

CCA -Portable Controlled Contamination Area (on wing CCA)

2023-05-01
WIP
AIR7522
This SAE Aerospace Information Report (AIR) gives guidelines for the design of local “controlled contamination area” (CCA) which can provide a particle-free zone in a hangar or field environment. These guidelines may be used when performing bonded repairs specified in an approved repair procedure or with the agreement of the Original Equipment Manufacturer (OEM) or regulatory authority.
Standard

Composite and Bonded Structure Engineers: Training Document

2023-04-24
WIP
AIR5278A
This document provides recommendations concerning the minimum knowledge and analytical skill guidelines for a composite and metal bond repair design engineer. Teaching levels have been assigned to this curriculum to define the knowledge, skills and abilities needed to design appropriate repairs. Minimum hours of instruction have been provided to ensure adequate lecture and laboratory coverage of all subject matter. These minimums may be exceeded, and may include an increase in the total number of training hours and/or increases in the teaching levels.
Standard

Aircraft Modifications Involving Composites

2022-11-15
WIP
ARP7520
This document provides general guidelines for showing compliance to the applicable certification requirements associated with the modification or alteration to type design of composite aircraft structure or installation of composite parts on metallic or composite airframes, of all aircraft product types. The types of modifications or alterations that this document is meant to address are: • Modification or alteration of metal or composite baseline structure, necessary to install a cargo or mission equipment pod, antenna, winglets, etc. • Installation of composite parts onto metallic or composite baseline structure, such as the pods, antennas, performance enhancing aerodynamic fairings, radomes, cowlings, interior components, etc.
Standard

Mixing Resins, Adhesives and Potting Compounds

2022-02-02
CURRENT
ARP5256A
This SAE Aerospace Recommended Practice (ARP) describes and gives general guidelines on use and applicability of the standard method for mixing resins, adhesives, and potting compounds.
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