# Additional airplane category and single engine class rating course — airline transport pilot certificate — FAA flight training hour minimums: Part 61 vs Part 141, by certificate and rating For Additional airplane category and single engine class rating course, certificate or rating is Additional airplane category and single engine class rating course — airline transport pilot certificate; part 141 minimum is 25 hours flight training; part 141 appendix is Part 141 Appendix I, para. 4(a)(4), recorded from its source on 2026-08-18. - **Certificate or rating:** Additional airplane category and single engine class rating course — airline transport pilot certificate _(our reading, not quoted from the source)_ - **Part 141 minimum:** 25 hours flight training _(verified: appears in the quote below)_ - **Part 141 appendix:** Part 141 Appendix I, para. 4(a)(4) _(our reading, not quoted from the source)_ ## What the source says > ( 4 ) For the airline transport pilot certificate, the course must include 25 hours flight training, including 15 hours of instrument training, in a single engine airplane on the areas of operation under part 141, appendix E, paragraph 4.(c). ## 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/).