Sec. 23.685 - Control system details.
(a) Each detail of each control system
must be designed and installed to prevent jamming, chafing, and
interference from cargo, passengers, loose objects, or the freezing of
(b) There must be means in the cockpit
to prevent the entry of foreign objects into places where they would jam
(c) There must be means to prevent the
slapping of cables or tubes against other parts.
(d) Each element of the flight control
system must have design features, or must be distinctively and permanently
marked, to minimize the possibility of incorrect assembly that could
result in malfunctioning of the control system.
[Doc. No. 4080, 29 FR 17955, Dec. 18, 1964, as
amended by Amdt. 23-17, 41 FR 55464, Dec. 20, 1976]