# Additional airplane category and single engine class rating course — commercial 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 — commercial pilot certificate; part 141 minimum is 55 hours of flight training; part 141 appendix is Part 141 Appendix I, para. 4(a)(3), recorded from its source on 2026-08-18. - **Certificate or rating:** Additional airplane category and single engine class rating course — commercial pilot certificate _(our reading, not quoted from the source)_ - **Part 141 minimum:** 55 hours of flight training _(verified: appears in the quote below)_ - **Part 141 appendix:** Part 141 Appendix I, para. 4(a)(3) _(our reading, not quoted from the source)_ ## What the source says > ( 3 ) For the commercial pilot certificate, the course must include 55 hours of flight training on the areas of operations under part 141, appendix D, paragraph 4(d)(1). ## 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/).