MIL-DTL-83420 Wire Rope, Flexible, For Aircraft Control, General Specification ForThis specification covers the requirements for carbon steel and corrosion resistant steel aircraft control flexible wire rope. Type I wire rope will be capable of operation within a -65 degrees F to +250 degrees F \(-54 degrees C to +121 degrees C\) temperature range in wind, dust, fuel, and oil spills, in wash-down and other environmental stresses and aircraft experiences. Type II wire rope will be capable of operation within a -65 degrees F to +200 degrees F \(-54 degrees C to +94 degrees C\) temperature range in wind, dust, fuel, and oil spills, in wash-down and other environmental stresses and aircraft experiences.

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MIL-DTL-83420M

Test sheaves

Clamp wire rope to

the drum

90�

Wire Rope

90�

13.5 in.

min.

Drum 16 in. dia.

oscillating rate 120

reversals per min. and

equipped with a counter

13.5 in. min.

Idler sheave

11.5 in. dia. min.

For load, see tables III & IV

Hanging Weight

NOTE:

1. The dimensions of the test sheaves are test parameters only and are by no means intended as design criteria. For

test loads, see tables III and IV.

FIGURE 1. Diagram of endurance testing machine and conditions of the test.