Three letter codes used in the US and Canada are not recognised by ICAO but are purely for their own benefit. As only about a third of the total number of airfields have ICAO codes it makes sense to try and categorise the rest - something the UK should do. I guess the only option is to file as we do in real life and put ZZZZ for any non coded airport. The airfield name should be included in the Remarks box under DEP/ or DEST/ as appropriate. bones -----Original Message----- From: jhb-bounce@xxxxxxxxxxxxx [mailto:jhb-bounce@xxxxxxxxxxxxx] On Behalf Of Gerry Winskill Sent: 20 September 2007 11:02 To: jhb@xxxxxxxxxxxxx Subject: [jhb] FSX Scenery Download I downloaded a new FSX scenery yesterday, from Avsim, I think. It's "Utah Complete". Not photographic but a first flight, at crack of dawn, suggests it's a decent entry to USA scenery. It also covers some very high territory, which can make life interesting. Using if for an IVAO flight revealed a hiccup that's not the fault of the scenery and probably relevant to much of the USA. My first intention was to fly from Salt Lake City International to Morgan County, which has the code 42U. Once in the air I received an automated blast, telling me that I must file a flight plan that contains both a departure field and an arrival. Clearly IVAO's software didn't recognise 42U. Since there are hundreds of USA fileds without a K prefix this probably appies all across the country. To keep it happy I filed a plan to Ogden Hinkley (KOGD), routing via Morgan County. That was accepted. Having finished the flight I filed a Pirep, where the same problem cropped up. I had to file the destination as KOGD again. The problem here was that it won't accept a Pirep destination with only three digits. Gerry Winskill