Fire
Detection
Detection
Thermal switches are heat-sensitive units that complete circuits at a certain temperature. How are they wired?
____ with each other, but in ___ with the indicator lights.
Parallel, Series
The types of fire extinguishing agents for aircraft interior fires are:
Water, carbon dioxide, dry chemicals, and halogenated hydrocarbons.
What method is used to detect the thermal discharge of a built-in fire-extinguisher system?
Rupture of the _____ plastic disk in the thermal discharge line.
red
Smoke in the cargo or baggage compartment is commonly detected by which instrument?
Photoelectric Cell
Fire defined as ordinary combustibles (wood, cloth, paper, upholstery) is:
Class A
Smoke detection instruments are classified by their method of:
Detection
Which fire-extinguishing agent is considered the least toxic?
Halon 1301
Evidence that a built-in extinguishing system has been intentionally discharged is indicated by the absence of a:
Yellow
Smoke detectors that rely on measuring light transmissibility are called:
Photoelectric smoke detectors.
Fire involving flammable petroleum products, combustible liquids, grease, solvents, and paints is
Class B
The most common cause of false fire warnings in continuous-loop detection systems is:
Dents, kinks, or crushed sensing elements.
The proper fire-extinguishing agent to use on smoldering fabric (non-electrical fire) is:
Water
What must be taken into account when checking a fire-extinguisher container for pressure?
Ambient Pressure
When air contains carbon monoxide, portable CO detectors with yellow silica gel turn:
Green
Fire defined as combustible metals such as magnesium and titanium is:
Class D
A thermocouple in a fire-detection system causes the warning system to operate because:
It generates a small current when heated.
A squib, as used in a fire-protection system, is:
A device used for causing ….?
the fire-extinguishing agent to be released.
If a fire-extinguisher cartridge is removed from a discharge valve, it should be:
Used only on the original discharge valve assembly.
A contaminated carbon monoxide tester that started tan will turn:
Darker shades of gray to black
Internal engine tailpipe fires during shutdown or false starts can be:
___ ____by motoring the engine with the starter.
Blown out
All transport category airplanes are required to have what installed in cargo and baggage compartments?
Smoke Detectors
A CO₂ fire-extinguisher container can be checked to determine its charge by:
Container and contents.
Maintenance of fire-detection systems includes the:
Replacement of damaged sensing elements.
According to your instructor, fire is:
Bad
Which items must be observed as fire precautions when working on an oxygen system?
1,2,3&4