I have had to perform 27 ADF only approaches in the UK in the last 3 months in a Boeing 737 on scheduled ops. 3 of those were to minimums and one resulted in a go-around.
Dip is present in my aircraft type to about 7 degrees. The years spent in various holds teaching Dip to students allows me to somewhat enjot these approaches without any aprehension.
If you can hold and approach to minima on and NDB then you can do most things. A non-precision night circle to land on one engine not withstanding...
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