# Ground instructor refresher course (special preparation) — FAA flight training hour minimums: Part 61 vs Part 141, by certificate and rating

For Ground instructor refresher course (special preparation), part 141 minimum is 16 hours of aeronautical knowledge training; part 141 appendix is Part 141 Appendix K, para. 12, recorded from its source on 2026-08-18.

- **Certificate or rating:** Ground instructor refresher course (special preparation) _(our reading, not quoted from the source)_
- **Part 141 minimum:** 16 hours of aeronautical knowledge training _(verified: appears in the quote below)_
- **Part 141 appendix:** Part 141 Appendix K, para. 12 _(our reading, not quoted from the source)_

## What the source says

> An approved special preparation ground instructor refresher course must include at least 16 hours of aeronautical knowledge training on:

## Source

- https://www.ecfr.gov/current/title-14/chapter-I/subchapter-D/part-141

Last verified: 2026-08-18. Review by: 2027-08-18.
Part of [FAA flight training hour minimums: Part 61 vs Part 141, by certificate and rating](https://referencesource.org/flight-training-hour-minimums-61-vs-141/).