A-320 Single Engine Taxi out Myth Busters
08-03-2010, 08:51 AM
#21
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Joined APC: Mar 2008
Position: DAL Pilot
Posts: 1,133
I was actually commuting on an Airbus from SLC the other day. The Captain elected to two engine taxi. It was a short flight so we were pretty light. The Captain had to ride the brakes out to the runway to keep from taxiing too fast. We approached the end of the runway and the brakes overheated so we had to wait for them to cool down before taking off. I guess that can be another advantage to single engine taxiing. You don't heat up the brakes!
08-03-2010, 08:56 AM
#22
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Joined APC: Jul 2008
Posts: 5,032
I've found on some airplanes even with the electric pump on, the PTU is still on. Sometimes the electric pump does not put out enough pressure to keep the PTU from coming on. In theory, the PTU is not supposed to be on with the electric pump on, but it does not always work like that.
08-03-2010, 10:15 AM
#24
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Position: B757/767
Posts: 13,088
We have over 700 airplanes in our fleet. It adds up. Plus, break away thrust on the 737/320 typically requires only 35% N1 unless your pointed up hill. It really doesn't take more thrust, just technique. The 320 is doing a ton of LGA flying, the 737 a ton of JFK flying. The taxi times can really add up, and so can the savings.
08-03-2010, 10:16 AM
#25
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Position: B757/767
Posts: 13,088
I was actually commuting on an Airbus from SLC the other day. The Captain elected to two engine taxi. It was a short flight so we were pretty light. The Captain had to ride the brakes out to the runway to keep from taxiing too fast. We approached the end of the runway and the brakes overheated so we had to wait for them to cool down before taking off. I guess that can be another advantage to single engine taxiing. You don't heat up the brakes!
08-03-2010, 10:46 AM
#26
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Position: 737 Capt
Posts: 1,166
08-03-2010, 10:50 AM
#27
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Joined APC: Feb 2009
Position: 320B
Posts: 781
Are you sure that you aren't getting confused with the noise from the Yellow Electric pump. When that pump is on, it can (usually does) give a very high pitched squeal with is actually quite annoying when riding in the back.
08-03-2010, 01:32 PM
#29
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08-03-2010, 02:15 PM
#30
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Joined APC: Sep 2008
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Denny
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