Final answer:
The list of SP aircraft authorized to fly under Part 135 can be found in the FAA regulations, which are based on exemptions or operating limitations granted by the FAA.
Step-by-step explanation:
The list of Special Purpose (SP) aircraft authorized to fly under Part 135 can be found in the Federal Aviation Administration (FAA) regulations. Part 135 of the FAA regulations governs the operation of aircraft for compensation or hire.
The specific list of authorized SP aircraft can vary, as it depends on the specific exemptions or operating limitations granted by the FAA. These exemptions or limitations are granted based on the unique characteristics or missions of the SP aircraft.
To find the most up-to-date list of authorized SP aircraft, it is recommended to consult the FAA regulations or seek guidance from a qualified aviation professional.