Part 135 — Operating Requirements: Commuter and On-Demand Operations
On-demand and commuter ops rules — relevant for commercial pilots.
Subpart B—Flight Operations
Subpart C—Aircraft and Equipment
Subpart D—VFR/IFR Operating Limitations and Weather Requirements
Subpart E—Flight Crewmember Requirements
Subpart F—Crewmember Flight Time and Duty Period Limitations and Rest Requirements
Subpart G—Crewmember Testing Requirements
Subpart I—Airplane Performance Operating Limitations
Subpart J—Maintenance, Preventive Maintenance, and Alterations
Subpart K—Hazardous Materials Training Program
Subpart L—Helicopter Air Ambulance Equipment, Operations, and Training Requirements