part of the clamps from cutting or chafing the
supported line. Carefully inspect clamps for
proper installation. Figures 2-21 and 2-22 shows
two examples of correct and incorrect installa-
tions, Figure 2-23 shows how improperly installed
or wrong size clamps hide the damage they cause.
SAFETY METHODS
Safetying is a process of securing all aircraft
bolts, nuts, capscrews, studs, and other fasteners.
Safetying prevents the fasteners from working
loose due to vibration. Loose bolts, nuts, or
screws can ruin engines or cause parts of the air-
craft to drop off. To carry out an inspection on
an aircraft, you must be familiar with the various
methods of safetying. Careless safetying is a sure
road to disaster. Always use the proper method
for safetying. You should always inspect for pro-
per safetying throughout the area in which you
are working.
There are various methods of safetying aircraft
parts. The most widely used methods are safety
Figure 2-23.-Hidden damage from improperly installed
clamp.
wire, cotter pins, lock washers, snap rings, and
special nuts. Some of these nuts and washers have
been described previously in this chapter. You
should know how to use safety wire and cotter
pins.
Safety Wiring
Safety wiring is the most positive and satisfac-
Figure 2-22.-Examples of (A) incorrect and (B) correct in-
stallation of Adell clamp.
tory method of safetying. It is a method of wiring
2-17
