Fire Protection System

Question 1

How many fire detectors are there and where

Answer 1

5 radiation-sensing flame detectors

• 2 in each engine
• 1 in APU

Question 2

Detection

In case of fire …

Answer 2

detectors react to the infrared radiation and send a signal which causes proper fire extinguisher arming lever

depending on fire location

• # 1 ENG EMER OFF
• # 2 ENG EMER OFF
• APU T-handle

master FIRE warning also appears

detectors automatically reset itself with warnings disappearing when the infrared radiation source ceases to emit

Question 3

Extinguishing

Answer 3

main and reserve capability
both containers have dual outlets

systems have thermal discharge safety port - indicating that one or both containers have discharged overboard

Question 4

WARNING

Answer 4

If no ac power applied to the helicopter fire extinguisher agent cannot be discharged into the No. 2 engine

Question 5

in case of crash

Answer 5

crash actuated system is part of the fire extinguisher system. upon impact of a crash of 10 Gs or more. the switch will automatically fire both fire extinguishing containers into both engine compartments