Miscellaneous equipment.
CFR · 2024-01-01 · US · Title 14
The following is the required miscellaneous equipment: (a) An approved seat for each occupant. (b) An approved safety belt for each occupant. (c) A master switch arrangement. (d) An adequate source of electrical energy, where electrical energy is necessary for operation of the rotorcraft. (e) Electrical protective devices.
official document · source cfr-2024 · id 14:§ 27.1307