pilotpip

Chris,The answer is quite simple and occurs for airports other than EGLL as well. In one of your other posts you list an error message - FMC error "EGLL err: 05 rwy unknown", this occurs when the SID/STAR file has a reference to a runway (in this case 05) that doesn't appear in the Program FilesMicrosoft GamesFlight Simulator 9FMCWPNAVDATAwpNavAPT.txt file for the airport. OK Heathrow has a runway 05 (and 23 for that matter), but they haven't been included in the wpNavAPT.txt file so when the SID/STAR file is read by the FMC it cannot match the Rwy05 entry and errors. The RNWS section should be as follows in the EGLL.txt fileRNWSRNW 09RRNW 09LRNW 27RRNW 27LENDRNWSAll should work as advertised after that... but don't quote me as if 05 or 23 have been included in the other sections they may need removing from them.They are possible excluded from the APT file because they are rarely used - I can't say that in all my time at LHR I ever saw 05 used for anything and 23 only when the winds put 27L/R out of crosswind limits for lighter aircraft, even then 27L/R were used for all departures and the heavies still used them for landing which makes for interesting ATC operation. No doubt someone will correct me as I know the charts show 23 SIDs!Regards Pip