Records of overhaul and rebuilding

This regulation defines when you can legally use the terms "overhauled" or "rebuilt" in maintenance records.

To call something overhauled, it must be disassembled, cleaned, inspected, repaired as needed, and reassembled using FAA-acceptable methods. It must also be tested according to approved standards from the type certificate holder or other FAA-accepted data.

To call something rebuilt, the requirements are stricter: the item must meet the same tolerances and limits as a brand-new part. This means using either new parts or used parts that meet new-part specifications (or approved oversized/undersized dimensions).

This matters because these terms have specific legal meanings in aviation maintenance. You cannot simply call routine maintenance an "overhaul" or claim something is "rebuilt" without meeting these standards. Using these terms incorrectly in logbooks or maintenance forms violates the regulation and misrepresents the work performed, which affects aircraft airworthiness documentation and value.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*