What are the regulations for crossing the Atlantic in a twin engine prop plane
Aircraft operating under Part 91 have no ETOPS requirements. ETOPS is only applicable to Part 121 and Part 135 operations. FAR 121.161 only applies to operators of twin-engine turbine aircraft in scheduled airline service. The rules for Part 135 are in 14 CFR Appendix G to Part 135, Extended Operations (ETOPS) and excludes multiengine transport-category turbine-powered aircraft.