# Pilot refresher course (special preparation) — ground training — FAA flight training hour minimums: Part 61 vs Part 141, by certificate and rating For Pilot refresher course (special preparation), certificate or rating is Pilot refresher course (special preparation) — ground training; part 141 minimum is 4 hours of aeronautical knowledge training; part 141 appendix is Part 141 Appendix K, para. 10(a), recorded from its source on 2026-08-18. - **Certificate or rating:** Pilot refresher course (special preparation) — ground training _(our reading, not quoted from the source)_ - **Part 141 minimum:** 4 hours of aeronautical knowledge training _(verified: appears in the quote below)_ - **Part 141 appendix:** Part 141 Appendix K, para. 10(a) _(our reading, not quoted from the source)_ ## What the source says > ( a ) 4 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/).