IRImplementing rule
CS 25.1543Instrument markings; general
(See AMC 25.1543) For each instrument –
(a)When markings are on the cover glass of the instrument, there must be means to maintain the correct alignment of the glass cover with the face of the dial; and
(b)Each instrument marking must be clearly visible to the appropriate crew member.
IR · CS 25.1543 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023