APU Panel

Question 1

MASTER SW pb - Fault light (Amber)

Answer 1

Auto Shutdown for many reasons

Fire will only cause auto shutdown on the ground

Question 2

MASTER SW pb - ON light (Blue)

Answer 2

ECB self test
Flap opens
Fuel isolation valve opens and fuel pump on
ECAM page appears

Question 3

MASTER SW pb - OFF

Answer 3

MASTER SE on light and start avail light extinguish
Shutdown delay 60-120 seconds if APU bleed used
Flap Closes

Question 4

START pb - AVAIL light (Green)

Answer 4

N>99.5%

N>99% for 2 seconds

Question 5

START pb - ON light (Blue)

Answer 5

APU Starts