SIGNS Panel

Question 1

When will the EXIT signs automatically illuminate?

Answer 1

• With the EMER EXIT LT switch in ARM, and normal AC power is lost.
  - DC SHED ESS BUS not powered
  - Cabin altitude is excessive (above 11,300 feet), NO SMOKING, FASTEN
  SEAT BELT and EXIT signs illuminated.

Question 2

What lights illuminate when normal aircraft electrical power fails?

Answer 2

• Floor proximity emergency escape path-marking system
  - Overhead emergency lighting

Question 3

What lights illuminate when the EMER EXIT LT switch is placed to ON?

Answer 3

• Overhead emergency lighting
  - Floor proximity emergency escape path marking system
  - EXIT lights

Question 4

What occurs when the EMER EXIT LT switch is placed to OFF?

Answer 4

• All lights OFF
  - Amber EMER EXIT LT OFF light illuminates

Question 5

Why do we place the NO SMOKING SIGN to AUTO instead of ON?

Answer 5

 It allows the EMER EXT LT to charge their batteries.