Transport Category Rotorcraft (14 CFR part 29) - Bigger/heavier rotorcraft (above 7000 lbs). Though you can technically certify a rotorcraft under 7000 lbs in the transport category, this is not historically done.
Special Airworthiness Information Bulletins (SAIB)
- The criteria for when to issue an SAIB for Rotorcraft products can be found in FAA National Policy 8110.100
Standards Differences
14 CFR part 27 and part 29 are harmonized with European Aviation Safety Agency (EASA) Certification Specifications (CS), CS 27 and CS 29, respectively. There are no substantive standards differences.