4tet From Spain, joined Sep 2007, 109 posts, RR: 0 Posted (1 year 6 months 2 weeks 3 days 13 hours ago) and read 1737 times:
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...
wilco737 From Greenland, joined Jun 2004, 8476 posts, RR: 78 Reply 1, posted (1 year 6 months 2 weeks 3 days 13 hours ago) and read 1729 times:
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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 From Greenland, joined Jun 2004, 8476 posts, RR: 78 Reply 3, posted (1 year 6 months 2 weeks 3 days 12 hours ago) and read 1711 times:
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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.
Starlionblue From Hong Kong, joined Feb 2004, 15871 posts, RR: 66 Reply 4, posted (1 year 6 months 2 weeks 3 days 12 hours ago) and read 1708 times:
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." - from Citadel by John Ringo