Super specific issue but having looked at an older AIP, this kinda threw me off.
DNMM (Lagos, Nigeria) RNAV 18R Chart (12-2) is showing the TAA Arc for the EBSEX transition from radial 091 to radial 181 with a TAA of FL50.
Tha AIP, however, shows the TAA Arc from radial 361 to radial 181 with a TAA of 2000 ft. It also provides a TAA arc for OVNIK on 12-2 which Navigraph doesn’t. And it puts the TAA at MOLOP at 2000 ft as well.
Just curious to understand if I’ve spotted a bug 
Nothing but love from a fan.
Hi
thanks for contacting us …
Is it possible that you post the AIP charts as reference please that we can see this … Or is the AIP open and we can look deeper into it (than please the link to the AIP).
Thank you! 
Richard
Unable to share the AIP, nor is it public, unfortunately.
But, here’s the RNAV 18R plate, as reference.
729_DNMMAIP JAN 2019.pdf (271.8 KB)
The FL50 seems to be the descent restriction, but not the MSA/TAA of the fix.
Hi,
thanks for the update … but your charts are dated JAN/2019 … our charts are dated with DEC/2020 and when you look on the “changes”, you see also a TAA change … so your chart is simple outdated … no bug
Cheers,
Richard
Richard,
that possibility crossed my mind. And I don’t want to be that guiy, but do allow me some follow up, as the whole thing seems “odd” to me.
On the older AIP, the EBSEX TAA arc was a full 180 from 182 to 002. On the updated TAA, it’s covering the northwester corner, that, in a way, is also covered by the MOLOP TAA, for which the minimum is 3500 ft. Actually, this what threw me off in the first place. I was expecting the EBSEX TAA Arc to be southwestern, as expected on a typical RNAV.
I’m also trying to clarify this from other sources. Bug was probably a strong word. But my gut is telling me something is off
