March 19, 20242 yr Hello, I am using LNM 3.0.5 and I am facing a problem when I do a no precision approach with HDG. LNM gives me a runway heading of -1° compared to the official map; example : LFNM card RWY 04 = 43° and RWY 22 = 223° LNM gives me RWY 04 = 42° and RWY 22 = 222° I'm using MSFS 2020 and the LNM library is up to date on MSFS. I think I missed part of the settings, I would be grateful if you could help me, thank you in advance Edited March 19, 20242 yr by Area Config : AMD Ryzen 7 9800X3D - MSI PRO B850-S WIFI6E - RAM G.Skill 2 x 32 Go DDR5 6000 MHz CL30 - MSI GeForce RTX 5080 16G VENTUS 3X OC PLUS - 2 WQHD (2560x1440) screens and only one of which is for MSFS
March 19, 20242 yr All simulators and Navigraph 2402 give me 222°M, 225°T. Runway true heading in Navigraph data is 224.865° Declination there is 2.69° East. This is taken from the MSFS database and not calculated. 224.865 - 2.69 = 222,175 ~ 222° rounded Maybe the charts are too old? Alex Alex' Projects: Little Navmap
March 19, 20242 yr Author Strange, strange without I am not calling into question your knowledge and your references, I would like to share with you the LFMN cards file: https://drive.google.com/file/d/1QRiGxNl9nGyKZkfu9vbuYAUaVaJ8J2IO/view?usp=sharing This map is from December 2023 and it comes from the SIA: https://www.sia.aviation-civile.gouv.fr/documents/htmlshow?f=dvd/eAIP_22_FEB_2024/FRANCE/home.html Config : AMD Ryzen 7 9800X3D - MSI PRO B850-S WIFI6E - RAM G.Skill 2 x 32 Go DDR5 6000 MHz CL30 - MSI GeForce RTX 5080 16G VENTUS 3X OC PLUS - 2 WQHD (2560x1440) screens and only one of which is for MSFS
March 19, 20242 yr Can you click on the airport and then post the content of the information tab Airport -> Overview? No need to make a screenshot. Simply select and copy from the information tab and paste it here. I'd like to know what declination is shown and some other stuff. Alex Alex' Projects: Little Navmap
March 19, 20242 yr Author This is it ? Nice Côte D'Azur Airport (LFMN) ★★★★★ Carte, Procédures d'arrivée (STAR) Région: LF Ville: Nice Pays ou Code régional: France Élévation: 11 ft Déclinaison magnétique: 2,7° Est Altitude de transition: 5 000 ft Lever & coucher de soleil: 05:06, 18:11 UTC (crépuscule civil, date réelle) Coordonnées: 43° 39' 35,22" N 7° 12' 54,21" E Infrastructures ALS, Accessoires, Aire de trafic, Carburant, Parking, Procédures, Taxiways, VASI, Équipement de la tour de contrôle Piste(s) avion de ligne, éclairée Météo Station NOAA: LFMN 191730Z 20003KT CAVOK 15/12 Q1017 NOSIG ( VFR)Wind prefers runways: 22L et 22R Plus longue piste d'atterrissage Longueur: 9 709 ft Largeur: 152 ft Cap: 42°M, 222°M Revêtement: Ciment Fréquences COM Tour de contrôle: 118,700 MHz ATIS: 136,580 MHz Parking Portes: 18 Porte GA: 167 Largeur porte: Large Largeur porte: Porte lourde Sources des données Aéroports génériques Y:\Microsoft Flight Simulator\Official\Steam\fs-base-genericairports\scenery\0602\APX49160.bgl Navigation de base Y:\Microsoft Flight Simulator\Official\Steam\fs-base-nav\scenery\0602\NAX49160.bgl Communauté Y:\10-Linker_Community\Apt-00-France\Apt_FRA-LFMN-Nice-Justsim-Simmarket\scenery\objects.bgl Communauté Y:\Microsoft Flight Simulator\Community\navigraph-navdata\scenery\fs-base-jep\scenery\0602\NAX49160.bgl Steam Y:\Microsoft Flight Simulator\Official\Steam\microsoft-airport-lfmn-nice\scenery\microsoft\Nice-Airport\objects.bgl Liens AirNav.com, ChartFox (needs login), FlightAware, FltPlan, OpenNav, Codes des Aéroports du Monde, SkyVector Config : AMD Ryzen 7 9800X3D - MSI PRO B850-S WIFI6E - RAM G.Skill 2 x 32 Go DDR5 6000 MHz CL30 - MSI GeForce RTX 5080 16G VENTUS 3X OC PLUS - 2 WQHD (2560x1440) screens and only one of which is for MSFS
March 19, 20242 yr 1 hour ago, Area said: This is it ? Yes. Absolutely. Thanks! I see the same declination here. The Microsoft add-on airport is on top like here and Navigraph update installed. Now I have to dig through the code... MSFS and other simulators give the runway heading in true and LNM has to calculate the magnetic heading from this. The declination used for this comes from the sim or is calculated based on the world magnetic model. Maybe there is some critter somewhere in this chain. Alex Alex' Projects: Little Navmap
March 19, 20242 yr Sorry, but I cannot fix this. The MSFS airports have a declination value which is inaccurate (integer numbers). If I use this I get 23° but I even don't want to know what else will break when changing this. LNM uses the worldwide declination from the simulator BGL to calculate runway heading. So, sometimes there are slight differences. The true heading is always correct since it is read from the sim as-is. Magnetic is calculated using declination from different sources depending on sim. Alex Alex' Projects: Little Navmap
March 20, 20242 yr Author I understand that wanting to correct a (minor) shift risks disrupting all other calculations. Thanks for taking the time to look, it's really nice. For LFMN, no problem I will do with it. Thanks again for this great software. Best regards Config : AMD Ryzen 7 9800X3D - MSI PRO B850-S WIFI6E - RAM G.Skill 2 x 32 Go DDR5 6000 MHz CL30 - MSI GeForce RTX 5080 16G VENTUS 3X OC PLUS - 2 WQHD (2560x1440) screens and only one of which is for MSFS
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