concentriq
Posts: 283
Joined: Mon Jan 24, 2005 11:37 am

Taxi With One Engine

Sun Nov 20, 2005 5:35 am

Was on YX flight recently, and noticed someting I havent noticed before.

I was sitting in the back of 717 and was watching the engine. It didnt start till we got to the runway. Is taxiing with one engine a SOP or is it a cost saving measure? if it is so, how much fuel is saved using only one engine to taxi?
Mobilis In Mobili
 
TPAnx
Posts: 1007
Joined: Sun Aug 07, 2005 4:53 am

RE: Taxi With One Engine

Sun Nov 20, 2005 5:37 am

Don't know how much it saves..but it does save fuel..
Think this has come up before.
TPAnx
I read the news today..oh boy
 
Okie
Posts: 3658
Joined: Wed Jul 16, 2003 11:30 am

RE: Taxi With One Engine

Sun Nov 20, 2005 5:41 am

Normal these days to taxi on one engine on twin to save fuel until a couple minutes before take-off.

Hey, 10 bucks! is 10 bucks!

Okie
 
captaink
Posts: 3997
Joined: Wed May 23, 2001 10:43 am

RE: Taxi With One Engine

Sun Nov 20, 2005 5:42 am

Yep it does save fuel, don't know how much though. it is usually done on airports where the taxi time is quite a lot. I have had it done on dash 8's and 737's in LGA, ATR's in MIA, A320 series in PHL.
There is something special about planes....
 
Dakar
Posts: 70
Joined: Wed Nov 16, 2005 5:11 am

RE: Taxi With One Engine

Sun Nov 20, 2005 6:20 am

Does taxiing with one engine on A/C with wing-mounted engines cause any minor/major moment-arm issues? If so, is it easily countered with opposite rudder/nose gear steering?

Nick
 
BR715-A1-30
Posts: 6525
Joined: Thu May 30, 2002 9:30 am

RE: Taxi With One Engine

Sun Nov 20, 2005 10:02 am

I have noticed this on AirTran as well. They only taxi on one engine if the Taxi is going to be long, or if there is a long wait time. Usually, they don't start the second engine until they get moving. I've noticed this on most of my 717 flights. When FL did powerbacks in ATL, they always started both engines, but I was on one FL flight out of ATL and they only powerbacked on one engine.
Puhdiddle
 
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Starlionblue
Posts: 17361
Joined: Fri Feb 27, 2004 9:54 pm

RE: Taxi With One Engine

Sun Nov 20, 2005 10:20 am

Quoting Dakar (Reply 4):
Does taxiing with one engine on A/C with wing-mounted engines cause any minor/major moment-arm issues? If so, is it easily countered with opposite rudder/nose gear steering?

Yes and yes  Wink
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo

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