PPRuNe Forums - View Single Post - Difference between NADP 1 and 2 for a320
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Old 22nd Jan 2014, 11:23
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737Jock
 
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What are you talking about fliegen?

The FMGS database is according to company spec. For my company the database automatically sets NADP2 based on 1000ft above runway elevation.
So thrust reduction and acceleration at 1000ft AAL. 1000/1000 in your FMGS

If regulations require us to do a NADP1 we need to manually add 2000ft to the acceleration altitude. 1000/3000 in your FMGS.

In addition to that the thrust reduction altitude may need to be changed with regard to the EO acceleration altitude if this is higher the 1000 AAL, you can't reduce thrust before this altitude. And you won't accelerate before this altitude either.

There is nothing to autoset unless your company put the required values in the database. But even then it might require manual intervention.

NADP1 and 2 are international standards, it doesn't show acceleration points on a map.

It seems people are confused between best rate of climb and best angle of climb. Best rate of climb is good for reducing fuel burn, best angle of climb is good for the noise footprint on the ground (at least short-term, longterm the aircraft spends more time in the vicinity as it travels slower)
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