14 C.F.R. § 23.1522 Auxiliary power unit limitations.
Title 14 - Aeronautics and Space
If an auxiliary power unit is installed, the limitations established for the auxiliary power must be specified in the operating limitations for the airplane. [Doc. No. 26269, 58 FR 42166, Aug. 6, 1993]
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart G—Operating Limitations and Information
§ 23.1522 Auxiliary power unit limitations.