# Airplane additional single engine class rating course — airline transport pilot certificate — FAA flight training hour minimums: Part 61 vs Part 141, by certificate and rating For Airplane additional single engine class rating course, certificate or rating is Airplane additional single engine class rating course — airline transport pilot certificate; part 141 minimum is 25 hours flight training in a single engine airplane; part 141 appendix is Part 141 Appendix I, para. 4(j)(3), recorded from its source on 2026-08-18. - **Certificate or rating:** Airplane additional single engine class rating course — airline transport pilot certificate _(our reading, not quoted from the source)_ - **Part 141 minimum:** 25 hours flight training in a single engine airplane _(verified: appears in the quote below)_ - **Part 141 appendix:** Part 141 Appendix I, para. 4(j)(3) _(our reading, not quoted from the source)_ ## What the source says > ( 3 ) For the airline transport pilot certificate, the course requires 25 hours flight training in a single engine airplane on the areas of operation under appendix E to part 141, paragraph 4.(c), that includes 15 hours of instrument training. ## 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/).