Classes of Fire and Portable Fire Extinguishers CTS

11 . How often is hydrostatic testing required for Halon extinguishers?

12 years.

12 . Impaired judgement occurs when oxygen drops to:

17 percent.

1 . For a typical workplace or building, such as a hangar, the travel distance to a Class A or D fire extinguisher should not be more than:

75 feet.

14 . When discharging a Halon fire extinguisher on an unpressurized aircraft, how low should the aircraft descend in order to increase oxygen concentration?

8,000 feet or as low as practical.

2 . All aircraft are required to carry at minimum:

A fire extinguisher in the flight deck.

12 . When should a rechargeable fire extinguisher be recharged?

After use or when otherwise needed.

7 . If you encountered a fire in your hangar, you should NOT try to fight the fire if:

All of the answers are correct.

7 . Which of the following is an indication that thermal runaway has already occurred?

All of the answers are correct.

4 . For aircraft with interior access to the cargo compartment, where should the fire extinguisher be located?

At the interior of the entrance.

4 . What type of fire involves ordinary combustible materials such as paper and wood?

Class A.

2 . Fires are classified based on type of fuel. What class of fire has flammable liquids as fuel?

Class B.

2 . In the industry recommended procedure to put out a lithium battery fire, what should be done after extinguishing the fire?

Cool down the device and let rest untouched for 15 minutes.

9 . Which type of extinguisher should ONLY be used on Class D fires?

Dry powder.

3 . How often should the fire extinguisher aboard aircraft be checked to ensure they're secured and ready for use?

During every preflight inspection.

13 . What is the most common cause of fire on an aircraft?

Electrical wiring and failure of electrical components.

3 . A class C fire involves:

Energized electrical equipment.

4 . True or False? Ice is an acceptable method for putting out a lithium battery fire.

False, ice acts as an insulator and speeds up the thermal runaway process.

10 . True or False? The biggest hazard caused by a fire is the fire itself.

False. More deaths from fire are caused by smoke inhalation than burns.

1 . Besides the chain reaction that perpetuates the fire, what are the three components that make fire?

Heat, fuel, and oxygen.

6 . Since ensuring the device stays cool is critical, the FAA states that containment products should be capable of:

Holding liquid so that the device can be submerged during storage.

8 . Should an inflight fire occur, what is the first step the pilot(s) should take?

Immediately don protective equipment, such as smoke goggles and oxygen masks.

11 . Why are vapors considered dangerous during a fire?

It may be toxic or poisonous when inhaled or absorbed through the skin.

8 . The FAA states that the most effective cooling of an unstable PED occurs when:

Liquid gets inside the device.

5 . If you have a burning, smoking, or hot device, should you put it into a thermal runaway bag immediately?

No, the FAA does not recommend crewmembers moving any device until it is completely cooled.

5 . How are fire extinguishers labeled to indicate what type of fire they are appropriate for?

Pictograms and class of fire they are appropriate for.

5 . The P in P.A.S.S. means to:

Pull the pin at the top of the extinguisher.

9 . During a flight, you smell smoke and fumes but do not see an obvious fire. How would you go about locating the hidden fire?

Search the aircraft using the back of your hand to feel for heat behind wall panels and doors.

6 . The A in P.A.S.S stands for Aim the nozzle or hose of the extinguisher at:

The base of the fire. This is where the fuel is actually burning.

10 . Where would you find the record of the last visual inspection conducted on a fire extinguisher?

The inspection tag log on the extinguisher.

6 . What indicates that a fire extinguisher is NOT appropriate for a specific class of fire?

The pictogram for the class will be included with a black background for "NO" and a red slash.

1 . The overheating of a lithium ion battery, causing flames, heavy smoke, and potentially rocketing of the device is known as:

Thermal runaway.

8 . True or False? Halogenated Agent extinguishers are considered to be more effective and have a greater range than Carbon Dioxide extinguishers.

True. In addition, they're suitable for cold temperature and do not leave a residue behind.

3 . Which of the following is the most ideal method to extinguish a lithium battery fire?

Water Extinguisher.

7 . Which types of fire extinguishers are appropriate for use aboard aircraft?

Water and halogenated agent.