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SESK: Stuff Everyone Should Know · sesk.info/drone-category-four-record-retention

How long must Category 4 maintenance work records generally be kept?

Keep them for one year or until the work is repeated or superseded.

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  1. Exactly 30 days
  2. Forever in every case
  3. One year or until repeated or superseded ✔

Why: Category 4 maintenance, preventive maintenance, and alteration records have a specific retention rule. Keep them one year after completion, unless later work repeats or supersedes them first.

Huh, didn't know that: These records include the work description, completion date, and the name of the person who performed it.

The dad joke
Why did the maintenance record use a bookmark? It was due for a follow-up flight.
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References

Answer: One year or until repeated or superseded. Category 4 maintenance, preventive maintenance, and alteration records have a specific retention rule. Keep them one year after completion, unless later work repeats or supersedes them first.

  1. 14 CFR Part 107 www.ecfr.gov/current/title-14/chapter-I/subchapter-F/part-107
    must be retained for 1 year from when the work is completed
    Checked 2026-10-09.

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