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A319 IAE reducing EPR during take-off


Airprox

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Hi Guys,

I've noticed something during my last flight, and I'm not sure if this is a recent development or if it has been there all along...

Using the A319 IAE, during the take-off roll the target EPR decreases.

In my example flight, TOW around 61T, Flex Temp 57, before take-off the target EPR is 1.325

2015-4-16_18-20-41-34.jpg

Once the take-off commences, it starts to decrease, passing 100 KIAS it is down to 1.315

2015-4-16_18-21-9-865.jpg

It reaches its lowest level of 1.305 just after getting airborne, before it starts to increase again.

2015-4-16_18-21-31-979.jpg

I haven't got the A320/A321 installed at the moment, was just testing the v1.3 IAE A319 given the issues with take off performance in that aircraft in previous versions.

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