Technical data

13773-001
20-50
Page 330 Nov 2000
Note: It is preferable to safety wire all electrical connectors individually. Do not
safety wire one connector to another unless it is necessary to do so.
(e) Drilled head bolts and screws need not be safety wired if installed into self-locking nuts or
installed with lockwashers. Castellated nuts with cotter pins or safety wire are preferred on
bolts or studs with drilled shanks.
WARNING:
Safety wire shall not be used to secure nor shall safety wire be depen-
dent upon fracture as basis for operation of emergency devices such
as handles, switches, and guard-covering handles that operate emer-
gency mechanisms such as fire extinguishers and the like. However,
where existing structural equipment or safety of flight emergency
devices requires shear wire to secure equipment while not in use, but
which are dependent upon shearing or breaking of safety wire for suc-
cessful emergency operation of equipment. Particular care must be
exercised to assure that wiring under these circumstances will not
prevent emergency operations of these devices.
Care must be used to assure that safety wire doesn’t interfere with any
controls, structures, wires or any other objects.