Auxiliary Power Unit

Question 1

During Preliminary Cockpit Preparation, if starting APU on battery power only, it should be started within

Answer 1

30 minutes after selecting batts to AUTO.

35 minutes after batts to AUTO, battery charge is less than 25% max capacity

Question 2

APU Fire test result (with AC power)

Answer 2

• “APU FIRE” warning on ECAM
• CRC
• MASTER WARN light
• APU FIRE pb-sw lighted red
• SQUIB light
• DISCH light

Question 3

APU Fire test result (without AC power)

Answer 3

• APU FIRE pb-sw lighted red (partially)
• SQUIB light
• DISCH light