Airframe - Fire Systems, Rotorcraft, and Comms

(Refer to Figure 21) Using the chart, determine the temperature range for a fire-extinguishing agent storage container with a pressure of 330 psig. (Consider 330 psig for both minimum and maximum pressure).

• 47 to 73°F.

• 47 to 71°F.

• 45 to 73°F.

The thermocouple fire-warning system is activated by a

• Certain temperature.

• Core resistance drop.

• Rate-of-temperature rise.

Smoke in the cargo and/or baggage compartment of an aircraft is commonly detected by which instrument?

• Chemical reactor.

• Photelectric cell.

• Sniffer.

The thermal switches of a biometallic thermal-switch type fire-detection (single-loop) system are heat-sensitive units that complete circuits at a certain temperature. They are connected in

• Parallel with each other, and in parallel with the indicator lights.

• Parallel with each other, but in series with the indicator lights.

• Series with each other, but in parallel with the indicator lights.

Smoke detectors that use a measurement of light transmissibility in the air are called

• Thermocouple devices.

• Photoelectrical devices.

• Ultraviolet optical devices.

Which fire-extinguishing agent is considered to be the least toxic?

• Carbon dioxide.

• Bromotrifluoromethane (Halon 1301).

• Bromochloromethane (Halon 1011).

The most common cause of false fire warnings in continuous-loop fire-detection system is

• Improper routing or clamping of loops.

• Moisture.

• Dents, kinks, or crushed sensor sections.

Which fire-detection system measures temperature rise compared to a reference temperature?

• Fenwal continuous loop.

• Lindberg continuous element.

• Thermocouple.

What is the color code for fire extinguisher lines?

• Brown.

• Yellow.

• Red and green.

A carbon dioxide (CO(2)) hand-held fire extinguisher may be used on an electrical fire if the

• Horn is nonmetallic.

• Handle is insulated.

• Horn is nonmagnetic.