FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 7. Aircraft Hardware, Control Cables, and Turnbuckles | 8. Inspection and Repair of Control Cables and Turnbuckles | 7-144. Nonflexible Cables
AC 43.13-1B
9/8/98
TABLE 7-3. Flexible cable construction and physical properties.
NOMINAL
DIAMETER
OF WIRE
ROPE
CABLE
INCHES
1/32
3/64
1/16
1/16
3/32
3/32
1/8
5/32
3/16
7/32
1/4
9/32
5/16
11/32
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1 - 1/8
1 - 1/4
1 - 3/8
1 - 1/2
CONSTRUCTION
3 x 7
7 x 7
7 x 7
7 x 19
7 x 7
7 x 19
7 x 19
7 x 19
7 x 19
7 x 19
7 x 19
7 x 19
7 x 19
7 x 19
7 x 19
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
6 x 19 IWRC
TOLERANCE
ON
DIAMETER
(PLUS ONLY)
INCHES
0.006
0.008
0.010
0.010
0.012
0.012
0.014
0.016
0.018
0.018
0.018
0.020
0.022
0.024
0.026
0.030
0.033
0.036
0.039
0.045
0.048
0.050
0.054
0.057
0.060
0.062
ALLOWABLE
INCREASE
OF
DIAMETER
AT
CUT END
INCHES
0.006
0.008
0.009
0.009
0.010
0.010
0.011
0.017
0.019
0.020
0.021
0.023
0.024
0.025
0.027
0.030
0.033
0.036
0.039
0.045
0.048
0.050
0.054
0.057
0.060
0.062
MINIMUM BREAKING STRENGTH (Pounds)
MIL-W-
83420
COMP A
MIL-W-
83420
COMP B
(CRES)
MIL-C-
18375
(CRES)
LBS
110
270
480
480
920
1,000
2,000
2,800
4,200
5,600
7,000
8,000
9,800
12,500
14,400
17,600
22,800
28,500
35,000
49,600
66,500
85,400
106,400
129,400
153,600
180,500
LBS
110
270
480
480
920
920
1,760
2,400
3,700
5,000
6,400
7,800
9,000
12,000
16,300
22,800
28,500
35,000
49,600
66,500
85,400
106,400
129,400
153,600
180,500
LBS
360
700
1,300
2,000
2,900
3,800
4,900
6,100
7,600
11,000
14,900
19,300
24,300
30,100
42,900
58,000
75,200
is caused by friction between strands and be
tween wires. In bare cable, this is aggravated
by dirt and grit working its way into the cable;
and the lubricant working its way out leaving
dry, dirty wires rubbing against each other. In
long, straight runs of cable, vibration work-
hardens the wires causing the brittle wires to
fracture with eventual failure of the cable.
c. The nylon-jacket protects the cable in
a threefold manner. It keeps the lubricant from
oozing out and evaporating, it keeps dirt and
grit out, and it dampens the vibrations,
thereby, greatly reducing their effect on the ca
ble.
7-144. NONFLEXIBLE CABLES. (Refer
to table 7-4 and figure 7-9.) Nonflexible, pre
formed, carbon steel cables, MIL-W-87161,
composition A, are manufactured by the same
processes as MIL-W-83420, composition B,
flexible corrosion-resistant steel cables. The
nonflexible steel cables are of the 1 by 7
(Type I) or 1 by 19 (Type II) construction ac
cording to the diameter as specified in ta
ble 7-4. The 1 by 7 cable consists of six
Page 7-28
Par 7-143