The expiration date for replacing the battery shall be legibly marked on the outside of the transmitter and entered in the aircraft maintenance records. 

## Amateur-Built Aircraft 

The condition inspection for amateur-built aircraft replaces the annual inspection. 

## Available resources 

Your local FSDO can help you establish your aircraft maintenance program and the necessary maintenance records. Additional information relating to aircraft maintenance records can be obtained from: 

• 14 CFR Part 39, Airworthiness Directives 

• 14 CFR Part 43, Maintenance, Preventive Maintenance, Rebuilding, and Alteration 

• 14 CFR Part 91, General Operating and Flight Rules 

• AC 43-9 (as revised), Maintenance Records 

These publications are available on the FAA website at www.faa.gov and from U.S. Government Printing Office (GPO) bookstores located throughout the United States. For more information about obtaining these publications, refer to the information contained in chapter 11. 

