Advisory Circular AC 43.13-1B
Aircraft Repairs and Inspections
Acceptable Methods, Techniques, and Practices
This advisory circular (AC) pertains to aircraft repairs and inspections. The repair data in this AC is for minor repairs to non-pressurized areas of an aircraft. This data can be used if there is no repair or maintenance instructions published by the manufacturer for a needed repair.
CHAPTER 1. WOOD STRUCTURE.
CHAPTER 2. FABRIC COVERING.
CHAPTER 3. FIBERGLASS AND PLASTICS.
CHAPTER 4. METAL STRUCTURE WELDING AND BRAZING.
CHAPTER 5. NON DESTRUCTIVE INSPECTION.
CHAPTER 6. CORROSION, INSPECTION AND PROTECTION.
CHAPTER 7. AIRCRAFT HARDWARE, CONTROL CABLES AND TURNBUCKLES.
CHAPTER 8. ENGINES, FUEL, EXHAUST AND PROPELLERS.
CHAPTER 9. AIRCRAFT SYSTEMS AND COMPONENTS.
CHAPTER 10. WEIGHT AND BALANCE.
CHAPTER 11. AIRCRAFT ELECTRICAL SYSTEMS.
CHAPTER 12. AIRCRAFT AVIONICS SYSTEMS.
CHAPTER 13. HUMAN FACTORS.
The aircraft repairs and inspections outlined here may be used as approved data, and the AC chapter, page, and paragraph listed in block 8 of the FAA Form 337 when:
a. the user has determined that it is appropriate to the product being repaired;
b. it is directly applicable to the repair being made; and
c. it is not contrary to manufacturers data.
* The data here may also be used as a basis for FAA approval for major aircraft repairs.
FAR 43.13(a) states that each person performing maintenance, alterations, or preventive maintenance on an aircraft, engine, propeller, or appliance shall use the methods, techniques, and practices prescribed in the current manufacturers maintenance manual or Instructions for Continued Airworthiness prepared by its manufacturer, or other methods, techniques, or practices acceptable to the FAA.
The methods, techniques, and practices outlined in this advisory circular are considered acceptable to the FAA.
We put this document on-line for your convenience. You can refer to it during aircraft maintenance, repairs or restoration projects.
Using the table of contents below, click on a link to review the appropriate section:
Chapter 1. Wood Structure
Section 1. Materials and Practices
Section 2. Health and Safety
Section 3. Inspection
Section 4. Repairs
Section 5. Finishing Wood Structures
Chapter 2. Fabric Covering
Section 1. Practices and Precautions
Section 2. Application and Dope
Section 3. Inspection and Testing
Section 4. Repairs to Fabric Covering
Chapter 3. Fiberglass and Plastics
Section 1. Repair of Light Load Laminate Structures
Section 2. Metallic Sandwich Secondary Structure Repairs
Section 3. Transparent Plastics
Section 4. Windshields, Enclosures, and Windows
Chapter 4. Metal Structure, Welding, and Brazing
Section 1. Identification of Metals
Section 2. Testing of Metals
Section 3. Precautionary Measures
Section 4. Metal Repair Procedures
Section 5. Welding and Brazing
Section 6. Welding and Brazing Safety
Chapter 5. Nondestructive Inspection (NDI)
Section 1. General
Section 2. Visual Inspection
Section 3. Eddy Current Inspection
Section 4. Magnetic Particle Inspection
Section 5. Penetrant Inspection
Section 6. Radiography (X-ray) Inspection
Section 7. Ultrasonic Inspection
Section 8. Tap Testing
Section 9. Acoustic-Emission
Section 10. Thermography
Section 11. Holography
Section 12. Shearography
Chapter 6. Corrosion, Inspection & Protection
Section 1. General
Section 2. Types of Corrosion
Section 3. Corrosion Protection Measures for Basic Materials
Section 4. Corrosion Preventive Maintenance
Section 5. Visual Corrosion Inspection Guide for Aircraft
Section 6. Corrosion Removal Procedures
Section 7. Basic Corrosion Removal Techniques
Section 8. Aluminum and Aluminum Alloys
Section 9. Magnesium and Magnesium Alloys
Section 10. Ferrous Metals
Section 11. Other Metals and Alloys
Section 12. Plated Parts
Section 13. Corrosion Proofing of Land Planes Converted to Seaplanes
Section 14. Handling and Care of Aircraft Recovered from Water Emmersion
Chapter 7. Aircraft Hardware, Control Cables, and Turnbuckles
Section 1. Rivets
Section 2. Screws
Section 3. Bolts
Section 4. Nuts
Section 5. Washers
Section 6. Pins
Section 7. Safetying
Section 8. Inspection and Repair of Control Cables and Turnbuckles
Section 9. Turnbuckles
Section 10. Safety Methods for Turnbuckles
Section 11. Hardware Identification Tables
Chapter 8. Engines, Fuel, Exhaust, and Propellers
Section 1. Engines
Section 2. Fuel Systems
Section 3. Exhaust Systems
Section 4. Repair of Metal Propellers
Section 5. Inspection of Propellers
Section 6. Propeller Tracking and Vibration
Chapter 9. Aircraft Systems and Components
Section 1. Inspection and Maintenance of Landing Gear
Section 2. Hydraulic Systems
Section 3. Emergency Equipment
Section 4. Cabin Interior
Chapter 10. Weight and Balance
Section 1. Terminology
Section 2. Weighing Procedures
Chapter 11. Aircraft Electrical Systems
Section 1. Inspection and Care of Electrical Systems
Section 2. Storage of Batteries
Section 3. Inspection of Equipment Installations
Section 4. Inspection of Circuit-Protection Devices
Section 5. Electrical Wire Rating
Section 6. Aircraft Electrical Wire Selection
Section 7. Table of Acceptable Wires
Section 8. Wiring Installation Inspection Requirements
Section 9. Environmental Protection and Inspection
Section 10. Service Loop Harnesses (Plastic Tie Strips)
Section 11. Clamping
Section 12. Wire Insulation and Lacing String Tie
Section 13. Splicing
Section 14. Terminal Repairs
Section 15. Grounding and Bonding
Section 16. Wire Marking
Section 17. Connectors
Section 18. Conduits
Section 19. Protection of Unused Connectors
Section 20. Electrical and Electronic Symbols
Chapter 12. Aircraft Avionics Systems
Section 1. Avionics Equipment Maintenance
Section 2. Ground Operational Checks for Avionics Equipment (Electrical)
Section 3. Ground Operational Checks for Avionics Equipment (Non Electrical)
Section 4. Pitot/Static System
Section 5. Avionics Test Equipment
Chapter 13. Human Factors
Section 1. Human Factors Influence on Mechanic's Performance of aircraft repairs and inspections
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