DFW CERTIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS 2026
▶ When should personnel establish proper ventilation as part of a planned
and coordinated interior attack? (378)
A. Immediately
B. As soon as deemed safe
C. Ventilation is unnecessary
D. Once overhaul is complete. Answer: B. As soon as deemed safe
▶ Whenever possible, ARFF apparatus should approach an aircraft fire
from: (360)
A. upwind, uphill, and upstream.
B. an angle parallel to the fuselage.
C. an angle perpendicular to the fire.
D. downwind, downhill, and downstream.. Answer: A. upwind, uphill, and
upstream.
▶ Which agent application method is used only on a pool of liquid fuel on
the ground or pavement? (361)
A. Roll-on method
B. Base-of-the-fire method
C. Rain-down (Rainfall) method
,D. Deflection or bank-down method. Answer: A. Roll-on method
▶ Which is the agent of choice when fighting engine or APU/EPU fires?
(374)
A. Water
B. Dry chemical
C. Wet chemical
D. Clean, gaseous agents. Answer: D. Clean, gaseous agents
▶ Which of the following is an advantage of nonaspirating nozzles? (370)
A. Low expansion foam ratio creates better seal
C. Ability to apply protein or fluoroprotein foams
B. Creates maximum expansion of extinguishing agent
D. Ability to cover large areas with conventional variable stream nozzles.
Answer: D. Ability to cover large areas with conventional variable stream
nozzles
▶ Which of the following may be the best type of fire stream to use in well-
involved, unventilated aircraft interior fires because it will not upset the
thermal layering as much? (366)
A. Fog
B. Spray
C. Straight
D. Variable. Answer: C. Straight
, ▶ Crashes that result in severe damage where the aircraft will often break
apart upon impact with the ground or trees are called: (545-546)
A. low-impact.
B. high-impact.
C. abortive landings.
D. abortive take-offs.. Answer: B. high-impact.
▶ Hydraulic or gear failure emergencies may cause what type of flight
control problems in flight and on the ground? (524-525)
A. Bird strike
B. Steering, braking, and/or stopping
C. Activation of fire warning lights in the cockpit
D. Toxic gas buildup that can cause flashover or rollover. Answer: B.
Steering, braking, and/or stopping
▶ Modern aircraft wheels are commonly equipped with _____ that melt if
overheated, automatically deflating the tires when the rim reaches a
predetermined temperature. (526)
A. fusible plugs
B. wheel cover plates
C. combustible metals
D. shutoff or transfer valves. Answer: A. fusible plugs
▶ The severity of the hazard created by a fuel spill depends primarily upon:
(530)
AND VERIFIED ANSWERS 2026
▶ When should personnel establish proper ventilation as part of a planned
and coordinated interior attack? (378)
A. Immediately
B. As soon as deemed safe
C. Ventilation is unnecessary
D. Once overhaul is complete. Answer: B. As soon as deemed safe
▶ Whenever possible, ARFF apparatus should approach an aircraft fire
from: (360)
A. upwind, uphill, and upstream.
B. an angle parallel to the fuselage.
C. an angle perpendicular to the fire.
D. downwind, downhill, and downstream.. Answer: A. upwind, uphill, and
upstream.
▶ Which agent application method is used only on a pool of liquid fuel on
the ground or pavement? (361)
A. Roll-on method
B. Base-of-the-fire method
C. Rain-down (Rainfall) method
,D. Deflection or bank-down method. Answer: A. Roll-on method
▶ Which is the agent of choice when fighting engine or APU/EPU fires?
(374)
A. Water
B. Dry chemical
C. Wet chemical
D. Clean, gaseous agents. Answer: D. Clean, gaseous agents
▶ Which of the following is an advantage of nonaspirating nozzles? (370)
A. Low expansion foam ratio creates better seal
C. Ability to apply protein or fluoroprotein foams
B. Creates maximum expansion of extinguishing agent
D. Ability to cover large areas with conventional variable stream nozzles.
Answer: D. Ability to cover large areas with conventional variable stream
nozzles
▶ Which of the following may be the best type of fire stream to use in well-
involved, unventilated aircraft interior fires because it will not upset the
thermal layering as much? (366)
A. Fog
B. Spray
C. Straight
D. Variable. Answer: C. Straight
, ▶ Crashes that result in severe damage where the aircraft will often break
apart upon impact with the ground or trees are called: (545-546)
A. low-impact.
B. high-impact.
C. abortive landings.
D. abortive take-offs.. Answer: B. high-impact.
▶ Hydraulic or gear failure emergencies may cause what type of flight
control problems in flight and on the ground? (524-525)
A. Bird strike
B. Steering, braking, and/or stopping
C. Activation of fire warning lights in the cockpit
D. Toxic gas buildup that can cause flashover or rollover. Answer: B.
Steering, braking, and/or stopping
▶ Modern aircraft wheels are commonly equipped with _____ that melt if
overheated, automatically deflating the tires when the rim reaches a
predetermined temperature. (526)
A. fusible plugs
B. wheel cover plates
C. combustible metals
D. shutoff or transfer valves. Answer: A. fusible plugs
▶ The severity of the hazard created by a fuel spill depends primarily upon:
(530)
