CBO Guidance on UA Maintenance Standards
Verified from official sourcesAC 91-57C ¶ 3.3.2.4Version 1Effective -Verified 22 August 2026
In plain language
Follow your manufacturer's maintenance instructions, or general CBO maintenance guidelines if you built the drone yourself.
Requirement as structured
The FAA recommends that CBO safety guidelines instruct flyers to maintain their UA according to manufacturer instructions, or provide general maintenance guidance for homebuilt UA.
Original regulatory text
Guidance that a UA and its associated elements should be maintained in accordance with the manufacturer’s instructions. For homebuilt UA or those without manufacturer instructions, safety guidelines should provide general maintenance guidance.
Applies when
- actor
- Community-Based Organization (CBO)
- country
- United States
- regulatory category
- General