FAA Advisory Circular

Question 1

What does HRET stand for?

Answer 1

High Reach Extendable Turret

Question 2

What is the main benefit of using an HRET during ARFF operations?

Answer 2

Faster and more accurate firefighting with reduced agent usage

Question 3

What configuration allows HRET to extinguish fire 53% faster than roof turrets?

Answer 3

Down-in-front attack mode

Question 4

What is the ideal flow rate for precision application with HRET?

Answer 4

250 to 500 GPM

Question 5

What advantage does the skin-penetrating nozzle provide?

Answer 5

Extinguishes fire inside aircraft, reduces interior temperatures, ventilates smoke

Question 6

How often should ARFF operators be requalified?

Answer 6

At least annually

Question 7

What training tool allows simulated ARFF driving and HRET operations?

Answer 7

Full-size cab mockups or desktop virtual joysticks

Question 8

What type of camera is essential for piercing accuracy?

Answer 8

FLIR (Forward Looking Infrared) camera

Question 9

What is the minimum standoff distance for HRET piercing?

Answer 9

15 to 25 feet from the fuselage

Question 10

What piercing heights correspond to deck levels of a 747 or A380?

Answer 10

13’6”, 23’0”, and 31’0”

Question 11

What is the recommended piercing location on a passenger aircraft?

Answer 11

10–12 inches above cabin windows

Question 12

What does the acronym FLIR stand for?

Answer 12

Forward Looking Infrared

Question 13

What is the primary goal during an aircraft fire?

Answer 13

Protection and preservation of life

Question 14

Which foam pattern application is considered inefficient?

Answer 14

Raindrop application

Question 15

What is the risk of using a straight stream from a turret?

Answer 15

Danger to personnel and disruption of foam blanket

Question 16

What nozzle spray width is typical from a penetrating nozzle?

Answer 16

Approximately 40 feet

Question 17

What is the average water weight per gallon?

Answer 17

8.34 lbs

Question 18

What does DEVS stand for?

Answer 18

Driver Enhanced Vision System

Question 19

What is the function of complementary agents?

Answer 19

Enhance firefighting with Halon, dry chem, or Halotron

Question 20

What standard defines ARFF vehicle requirements?

Answer 20

NFPA 414

Question 21

How much water does a 3000-gallon ARFF truck deliver at 250 GPM for piercing?

Answer 21

12 minutes

Question 22

What type of container failed quickly in fire tests?

Answer 22

Lexan-sided cargo containers

Question 23

What are common clock positions for cargo aircraft piercing?

Answer 23

10:00 & 2:00 (main), 4:00 & 8:00 (belly)

Question 24

Why is FLIR critical in cargo aircraft fire operations?

Answer 24

Detects heat blooms to locate fire

Question 25

What should training lesson plans include?

Answer 25

Specs, weight/height, agents, flow rates, SOPs, hazards

Question 26

What causes ‘boom loading’ in an HRET?

Answer 26

Nozzle reaction during flow while the boom is held static

Question 27

How does the angle of piercing affect spray efficiency?

Answer 27

Too steep disrupts foam pattern, misplaces spray

Question 28

What are ULDs?

Answer 28

Unit Load Devices for cargo

Question 29

What effect does water weight have inside aircraft?

Answer 29

Alters aircraft balance; may cause tail tip

Question 30

Where is it safest to create a drain hole for excess water?

Answer 30

Just above the main deck rivet line