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ECAM APU page

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APU ECAM page

Number Name Variation Meaning
1 AVAIL Green color The APU N is above 99.5% or when the APU N is above 95% for 2 seconds
Hidden The APU is not available
2 APU Bleed air valve Green crossline The APU bleed air valve is closed.
Amber crossline The APU bleed air valve is closed, but the APU bleed is ON.
Green inline The APU bleed air valve is open
Amber XX The APU bleed air valve status is not available, or the APU Bleed pushbutton is not available.
3 APU bleed air pressure Green color The bleed air pressure is within normal operating range.
Amber XX ADIRS 1 or ADIRS 2 is not available, or the data from the ECB are not available.
4 APU GEN line contactor Green color The APU GEN line is closed
Hidden The APU GEN line is open
5 APU GEN indication White color APU GEN parameters are within normal operating range.
Amber color At least one of the APU GEN parameters is in an amber color
6 APU GEN Load legend Green color The APU GEN load is within normal operating range.
Amber color The APU GEN load is greater than 100%.
7 APU GEN voltage legend Green color The APU GEN voltage is within normal operating range.
Amber color The APU GEN voltage is greater than 120 volts or lower than 110 volts.
8 APU GEN frequency legend Green color The APU GEN frequency is within normal operating range.
Amber color The APU GEN frequency is greater than 410 Hertz or below 390 Hertx.
9 Fuel pressure Amber FUEL LO PR The APU fuel pressure is low
Hidden The APU fuel pressure is within normal operating range.
10 APU Flap Green FLAP OPEN The APU air intake is fully open.
Green pulsing FLAP OPEN The APU air intake is not fully closed after the APU master switch has been turned off for 3 minutes.
Hidden The APU air intake is fully closed.
11 APU N Green color The APU N speed is within normal operating range.
Amber color The APU N speed is greater than 102%.
Red color The APU N speed is greater than 107%.
12 APU EGT Green color The APU EGT temperature is within normal operating range.
Amber color The APU EGT is greater than the EGT Maximum minus 33°C, while the APU is starting.
Plusive Amber color The APU EGT is greater than the EGT maximum minus 33°C, while the APU is running.
Red color The APU EGT is greater than the EGT max.

Last update: January 17, 2022
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