New Zealand Duplicate Airports - Microsoft Fault but

Kia ora from Aotearoa, (Hi from New Zealand)

As with most I’m loving the NZ update and took the opportunity to do a fresh install of MSFS. The only add-on I had installed was navigraph-navdata. So I was surprised to see an oddity on my ‘Home’ airport, in Cromwell - by the Big Fruit :smiley: Removing the Navigraph Navdata fixed the issue. So I think this is a bit different to the usual double scenery elements issue as I have no add on scenery bayeond the MS world updates

Microsoft: NZWH APX93470.bgl
Navigraph: NZCW NAX93470.bgl

So this is squarely a Microsoft problem for using the wrong airport code for Cromwell Airport, which Navigraph uses correctly. Microsoft uses NZWH - which is actually Wellington Hospital Helipad and Navigraph uses NZCW - Cromwell.

I know there is a thing where Navigraph can’t change the code of an MS airport but is there a way to adopt the Microsoft code where the distance between airports is less than X NM? Say 1? I’m guessing that this would cause an issue where there are dual codes at an airport like military/civilian airports.

I looked into it using data exported from Littlenavmap and the other ones I found in NZ using a very basic search on airports sorted by latitude: 0.002 > SQRT((Lat 1 - Lat 2)^2 + (Lon 1 - Lon 2)^2)

Microsoft: NZDF APX93470.bgl
Navigraph: NZSF NAX93470.bgl

Microsoft: NZWJ APX93470.bgl
Navigraph: NZLA NAX93470.bgl

Microsoft: NZGE APX93470.bgl
Navigraph: NZHP NAX93470.bgl

Jamie Marshall
Taupō New Zealand

Oh, I’m also raising bugs for using ‘incorrect but valid’ airport codes in NZ, like NZWH being used for NZCW, the full list in NZ:


There are also a list of fictitious codes that will need to be watched to make sure that if CAA NZ uses those for new aerodromes that they don’t break other stuff.

Jamie Marshall
Taupō New Zealand

Hi Jamie,

Thank you very much for your detailed report/posting … Indeed, this is a general, worldwide issue in the MSFS. ASOBO uses old/outdated ICAO codes and/or fictive ICAO codes for some airports.

As you have identified, the airport ICAO codes are stored in different locations/files. There is a generic airport file, which can´t really be “overwritten/overruled” due to the internal logic in the MSFS - so we have no possibility to correct such information. Also, not with any fix in the priorities of the content-file because this generic airport-file will automatically be loaded by the sim.

What we don´t want is, that we “exclude” such double airports (due some distance calculation) from our database only because they are included in the MSFS stock data. You can´t “create” an airport without any runways - so only to create the airport ICAO code for the airport doesn´t work.

Sorry Jamie, we have spend a lot of time to find a solution for this but till now, we haven´t found any - to compare the default MSFS scenery data with our real-world data is very difficult and error prone as we have seen in the last WU, where ASOBO has changed/corrected/deleted some ICAO codes.

Sorry but again Jamie, thanks for your constructive posting and sharing your ideas to this topic. Possibly we shall find a way in the future - never say never :slight_smile:


Thanks Richard,

I’ve raised 2 issues with Asobo. One for using incorrect but valid codes and the other for using incorrect codes on other in NZ.

I expect then to fix this pretty quickly :rofl:

Thanks for the reply, hopefully there are enough keywords for others to find this helpful.

:joy: … the next SU is planned for August, at the earliest :joy: … but I´m “pretty” sure that they will fix it in one of the next WU :joy: :boom:

Thanks Jamie for your valuable input and your help in this case … we are also looking for any improvements of the MSFS, possible we will also find a solution to fix, we will see :wink:

Greetings from Austria to the other side of the world :earth_asia:

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