Advisory Circular AC 43.13-2B

Aircraft Alterations

Acceptable Methods, Techniques, and Practices

This advisory circular (AC) contains methods, techniques, and practices acceptable to the Administrator for the inspection and alteration on non-pressurized areas of civil aircraft of 12,500 lbs gross weight or less.


CHAPTER 1. STRUCTURAL DATA.
CHAPTER 2. COMMUNICATION, NAVIGATION, AND ELT SYSTEM INSTALLATIONS.
CHAPTER 3. ANTENNA INSTALLATION.
CHAPTER 4. ANTICOLLISION AND SUPPLEMENTARY LIGHT INSTALLATION.
CHAPTER 5. SKI INSTALLATIONS.
CHAPTER 6. OXYGEN SYSTEM INSTALLATIONS IN NON-PRESSURIZED AIRCRAFT.
CHAPTER 7. ROTORCRAFT EXTERNAL-LOAD DEVICE INSTALLATIONS - SLINGS AND RACKS.
CHAPTER 8. GLIDER AND BANNER TOW-HITCH INSTALLATIONS.
CHAPTER 9. SHOULDER HARNESS INSTALLATIONS.
CHAPTER 10. AIRCRAFT BATTERY INSTALLATIONS.
CHAPTER 11. ADDING OR RELOCATING INSTRUMENTS.
CHAPTER 12. CARGO TIEDOWN DEVICE INSTALLATIONS.


This AC is for use by mechanics, repair stations, and other certificated entities. This data generally pertains to minor alterations; however, the alteration data herein may be used as approved data for major alterations when the AC chapter, page, and paragraph are listed in block 8 of FAA Form 337 when the user has determined that it is:

a. Appropriate to the product being altered,

b. Directly applicable to the alteration being made, and

c. Not contrary to manufacturers data.

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, alterations or restoration projects.

Using the table of contents below, click on a link to review the appropriate section:


Chapter 1. Structural Data

Chapter 1. Structural Data


Chapter 2. Communication, Navigation, and Emergency Locator Transmitter System Installations

Chapter 2. Communication, Navigation, and Emergency Locator Transmitter System Installations


Chapter 3. Antenna Installation

Chapter 3. Antenna Installation


Chapter 4. Anti-collision and Supplementary Light Installations

Anti-collision and Supplementary Light Installations


Chapter 5. Ski Installations

Chapter 5. Ski Installations


Chapter 6. Oxygen System Installations in Non-Pressurized Aircraft

Section 1. General
Section 2. Installation of the Oxygen System
Section 3. Airworthiness Compliance Checklist Sheet: Oxygen System Installation in Un-pressurized Aircraft


Chapter 7. Rotorcraft External-Load Device Installations Cargo Slings and External Racks

Section 1. General
Section 2. Cargo Racks


Chapter 8. Glider and Banner Tow-Hitch Installations

Chapter 8. Glider and Banner Tow-Hitch Installations


Chapter 9. Shoulder Harness Installations

Section 1. General
Section 2. Geometry and Attachment
Section 3. Static Strength and Testing
Section 4. Installation an Inspection Checklists


Chapter 10. Aircraft Battery Installation

Section 1. General
Section 2. Lead Acid Battery Installation
Section 3. Nickel-Cadmimum Battery Installations
Section 4. Battery Installation Checklist
Section 5. Instructions for Continued Airworthiness


Chapter 11. Adding or Relocating Instruments

Chapter 11. Adding or Relocating Instruments


Chapter 12. Cargo Tie-down Device Installations

Chapter 12. Cargo Tie-down Device Installations


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