Text in force at CS27-10: from CS27-4, effective 2 Dec 2016.
(a) These Certification Specifications are applicable to small rotorcraft with maximum weights of 3 175 kg (7 000 lbs) or less and nine or less passenger seats.
(b) reserved (c) Multi-engine rotorcraft may be type certificated as Category A provided the requirements referenced in Appendix C are met.
ED Decision 2016/024/R · Source