APU Flashcards
What apu provides ?
Electric power
Pneumatic power
Can apu supply bleed air for the packs during takeoff ?
Yes, to avoid a thrust reductions when engines supply bleed air for the packs
This improve performance for takeoff when required
What’s the functions of apu in flight ?
Supply bleed airs packs
Start the engines
What’s is the max altitude that apu bleed supply two packs ? And one pack ?
2 15000
1 15000 a 20000
What the max altitude that’s apu supply electrical?
39800
O APU e controlado por quem ?
ECB eletrônico control box
Qual altitude máxima para dar start no apu com a bateria ?
250
Apu has own oil lubricantion system
True
What are the apu ground safety items ?
Automatic shutdown for apu fire
Automatic apu fire extinguishing
Horn in nose wheel sounds for apu fire
Where’s are the cockpit controls for the apu ?
Overhead panel
What’s is the name of the component that controls the APU start and operation ?
ECB eletrônico control box
Where is the APU inlet air flap ?
Bottom of the aft fuselage
The APU can provide pneumatic air to operate …. pack ate 20000
One pack
The apu can provide electrical power up to what altitude ?
Max certified altitude 39800
At how much percent of N the starter cuts out (APU)?
60% N
When the APU AVAIL lights will come on ?
When N of the APU reaches 95% the blue ON will extinguished and AvAil comes on
When does you turning off the apu bleed air ?
After engine start to avoid ingesting exhaust gases
For shut down APU what is the sequence ?
Turn off the bleed air before turn off the APU
How long ApU bleed continue operate after shutdown?
60 to 120 minutos
Why is the nominal delay time for APU shutdown with APU bleed air in use ?
60 to 120
What is the different about an APU battery start ?
The scam does not display
If the ecam APU page is not displayed what other indication appears to let you know the APU is running?
The green AVAIL light in the start pushbutton comes on
Will the apu starter engage before the Flap open annunciation appears on the ECAM APU page ?
No
Depois de três tentativas para ligar o Apu devemos esperar quanto tempo para uma nova partida ?
60min
