IRImplementing rule
CS 23.2255Protection of structure
(a)Each part of the aeroplane, including small parts such as fasteners, must be protected against deterioration or loss of strength due to any cause likely to occur in the expected operational environment.
(b)Each part of the aeroplane must have adequate provisions for ventilation and drainage.
(c)For each part that requires maintenance, preventive maintenance, or servicing, the applicant must incorporate a means into the aeroplane design to allow such actions to be accomplished.
IR · CS 23.2255 — CS-23 · ED Decision 2017/013/R · CS-23 Easy Access Rules · EAR revision 13 May 2026