4tet
Topic Author
Posts: 91
Joined: Sat Sep 22, 2007 3:18 am

### Standed At BCN Airport, No Current On Finger?

I'm currently waiting inside the flight QR066 at BCN, they say we don't have electric power coming from the ground anf hence we cannot start the engines...

My question is, aren't the engines started from the APU? I've asked the pilot and didn't have a 'good' or concrete answer...

Thanks,
R.

wilco737
Posts: 7275
Joined: Sun Jun 20, 2004 12:21 am

### RE: Standed At BCN Airport, No Current On Finger?

 Quoting 4tet (Thread starter):My question is, aren't the engines started from the APU? I've asked the pilot and didn't have a 'good' or concrete answer..

Usually the electric power comes from the APU. The APU delivers electrical power and air for the engines to start. But one of these 2 can be inoperative. So if the APU air is working, then you need the electrical power from the ground. So this is nothing to worry, can happen.

wilco737

4tet
Topic Author
Posts: 91
Joined: Sat Sep 22, 2007 3:18 am

### RE: Standed At BCN Airport, No Current On Finger?

So we are flying without APU? What if an engine or booth have to be restarted?

wilco737
Posts: 7275
Joined: Sun Jun 20, 2004 12:21 am

### RE: Standed At BCN Airport, No Current On Finger?

 Quoting 4tet (Reply 2):So we are flying without APU? What if an engine or booth have to be restarted?

the APU air can be fine, only the electric seems to be inoperative. Inflight you don't need the APU to start the engine. As long one engine is running you can do a so called crossbleed start and start the other.

wilco737

Starlionblue
Posts: 17830
Joined: Fri Feb 27, 2004 9:54 pm

### RE: Standed At BCN Airport, No Current On Finger?

 Quoting wilco737 (Reply 3):the APU air can be fine, only the electric seems to be inoperative. Inflight you don't need the APU to start the engine. As long one engine is running you can do a so called crossbleed start and start the other.

On many (most?) types the APU can be inoperative and you can still go.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo

wilco737
Posts: 7275
Joined: Sun Jun 20, 2004 12:21 am

### RE: Standed At BCN Airport, No Current On Finger?

 Quoting Starlionblue (Reply 4):On many (most?) types the APU can be inoperative and you can still go.

Never said anything else   If the APU is inop then you get air and electric from the ground.

wilco737

Starlionblue
Posts: 17830
Joined: Fri Feb 27, 2004 9:54 pm

### RE: Standed At BCN Airport, No Current On Finger?

 Quoting wilco737 (Reply 5):Quoting Starlionblue (Reply 4): On many (most?) types the APU can be inoperative and you can still go. Never said anything else If the APU is inop then you get air and electric from the ground.

Didn't say you said anything else.   Just wanted to clarify that the APU is not a necessity for flight. It is a convenience on the ground.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo

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