Hi,
I have always assumed that the approach climb gradient found from tables in the 737 manual or from LPC for A320 were single engine, as when going around at DA, we have to assume that one engine may fail and still be able to make the required gradient?
The common figures of around 3-5% would surely refer to single engine as with both engines and at normal landing weights, the climb gradient would be at least double this?
If I have completely misunderstood this and the figures refer to all engines, perhaps someone would be kind enough to explain the low figures?