12-65. What is the recommended procedure for
cooling overheated wheel, brake, and tire as-
semblies?
1.
Direct a steady stream of water at the as-
semblies
2.
Apply water fog to cool the brakes
3.
Discharge short burst of CO2 at the as-
semblies
4.
Allow assemblies to cool in the surround-
ing air
12-66. What
is
the
purpose
of
fusible
plugs
incorporated in aircraft wheel rim assemblies?
1.
Automatically deflates the tire
2.
Reduces the pressure on the wheel
3.
Eliminates the possibility of explosion
4.
All of the above
12-67. When responding to a wheel fire or hot brakes,
in what direction should personnel approach
the wheel assembly?
1.
In a fore or aft direction of the wheel
2.
Side to side in line with the axle
3.
Diagonally with the landing gear
4.
Any direction is approved to fight the fire
12-68. Which of the following materials may con-
tribute to wheel assembly fires?
1.
Grease
2.
Tire rubber
3.
Hydraulic fluid
4.
Each of the above
12-69. At what temperatures may aircraft tires ignite?
1.
200°F to 400°F
2.
500°F to 600°F
3.
700°F to 800°F
4.
900°F to 1000°F
12-70. What is the danger in combating wheel
assembly fires on aircraft with beryllium
brakes installed?
1.
They may produce irritating or poisonous
gases
2.
They burn out of control
3.
The brake temperature cannot be measured
4.
The heat is not transferred to the wheel
12-28
