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Why such a low V1 Figure?

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Why such a low V1 Figure?

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Old 2nd May 2007, 16:45
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Why such a low V1 Figure?

Afternoon,

In our airline we use the Airbus latop takeoff performance and the other day I was calculating figures usiing GLA RWY23.

The V Speeds that came out were V1 127, VR 146 and V2 149.

Can anyone explain why I have such a low V1 figure as I couldn't explain it to the operating Captain.

Thanks

Slow Progress
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Old 2nd May 2007, 18:03
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WET runway?
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Old 2nd May 2007, 20:31
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What did the LPC say was limiting you?

mcdhu
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Old 3rd May 2007, 13:21
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The runway was dry and the limiting factor was for obstacles.

A320
TOW 73500KGS
WIND 110/04
QNH 1019
OAT 20
RWY 23 FULL LENGTH

Slow Progress
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Old 3rd May 2007, 20:46
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Maybe you've got min V1 figures rather than balanced field or a mid range V1 setting.
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Old 5th May 2007, 10:54
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Tailwind factoring in I think
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Old 7th May 2007, 07:35
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Airbus LPC v 2.7 - Takeoff Performance Module
(obstacle data provided by Condor)
A320 msn 3031 or so CFM -B4 engines

GLA RWY 23
w/v -2 (110/4)
OAT 20
QNH 1019
TOW 73500
CF: 2
A/C: Off
A-I: Off
RWY: DRY
CG: >25
derate: TOGA

FLEX 48, V1 141-141, V2 141, VR 145

limitation TOW-OBS, ASD Min V1 (and max as well) 2532 m.



OPT CF: 3 F48, v1 138-138, v2 138, vr 142, TOW-OBS, ASD v1 2422m

FD (the un-real)
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