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SESK: Stuff Everyone Should Know · sesk.info/drone-category4-maintenance-records

How long must Category 4 records of completed maintenance work be kept?

1 year after the work, or until repeated or superseded.

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  1. 30 days
  2. 1 year, or until repeated or superseded ✔
  3. For the life of the pilot

Why: Category 4 drones need maintenance records with what was done, when and by whom. Those records stay for 1 year or until the work is repeated or superseded.

Huh, didn't know that: Records of life-limited parts, inspections and airworthiness directives must transfer with the drone when it is sold.

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Why did the drone keep a diary? Its mechanic said to write down every little fix.
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References

Answer: 1 year, or until repeated or superseded. Category 4 drones need maintenance records with what was done, when and by whom. Those records stay for 1 year or until the work is repeated or superseded.

  1. 14 CFR 107.140, current through October 7, 2026 www.ecfr.gov/api/versioner/v1/full/2026-10-07/title-14.xml?part=107&section=107.140
    must be retained for 1 year from when the work is completed or until the maintenance is repeated or superseded by other work.
    Checked 2026-10-09.
  2. 14 CFR 107.140, current through October 7, 2026 www.ecfr.gov/api/versioner/v1/full/2026-10-07/title-14.xml?part=107&section=107.140
    must be retained and transferred with the aircraft upon change in ownership.
    Checked 2026-10-09.

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