The rotorcraft must contain—
The markings and placards specified in §§ 27.1545 through 27.1565, and
Any additional information, instrument markings, and placards required for the safe operation of rotorcraft with unusual design, operating or handling characteristics.
Each marking and placard prescribed in paragraph (a) of this section—
Must be displayed in a conspicuous place; and
May not be easily erased, disfigured, or obscured.