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Airports, runways & frequencies: OurAirports (public domain, updated daily, fetched live).
ILS/LOC data: X-Plane default navdata (GPL, cycle 2012.08) — frequencies are stable but verify before use.
Built-in route generator: fixes, navaids & airways from the same GPL X-Plane navdata (AIRAC 1208 — outdated, simulation only; no SID/STAR or NAT tracks).
Online routes: FlightPlanDatabase API (saved/generated plans) and SimBrief (your own latest OFP).
SID/STAR: FAA CIFP (USA, public domain, current AIRAC, refreshed on every deploy); worldwide from your own X-Plane navdata import.
Magnetic declination: IGRF-14 model, epoch 2026.5.
A350 FMS calculator: speeds & limits from FCOM VIR A350 (15 MAR 20); V1/VR/V2 and T/D are estimates.
Weather: VATSIM METAR feed, MET Norway as fallback (cached 5 min).
Map: © OpenStreetMap contributors, Esri, OpenTopoMap, CARTO.
For flight simulation / planning only — not for real-world navigation.
Each project keeps its own route, bearing lines, generator fields, FMS calculator data and map view. Everything is stored in this browser (localStorage) — export to back up or move to another device.
The browser cannot talk to the simulator directly, so a tiny bridge runs on your PC and passes the aircraft position from X-Plane 11/12 or MSFS 2020/2024 to this map. Nothing is sent to the internet.
cd ~/Downloads; xattr -c sim-bridge-macos; chmod +x sim-bridge-macos; ./sim-bridge-macoschmod +x sim-bridge-linux-x64; ./sim-bridge-linux-x64SimConnect.dll from the MSFS SDK. With the SDK installed it is found automatically; otherwise copy SimConnect.dll (MSFS SDK → SimConnect SDK\lib) next to the bridge .exe.X-Plane on another PC: start the bridge with that PC’s IP, e.g. sim-bridge-windows-x64.exe 192.168.1.50 (from a command prompt) or ./sim-bridge-macos 192.168.1.50. Only one simulator: add --xplane or --msfs.
Bridge address: · change in ⚙️ Settings
If the CG is not known yet, FCOM suggests entering ZFWCG 29.0 % for now. From ZFW and ZFWCG the system computes the PFD speeds and sets the takeoff trim by itself after the first engine start.
FCOM has no V1/VR/V2 tables: real crews get them from the tablet (OIS). Here V2 is estimated from the approach VLS table (1.23 VS1g) scaled to 1.13 VS1g and checked against VMCA and VMCG. Take FLEX TEMP from your simulator’s calculator. METAR wind (true) is converted to magnetic.
Enter CRZ TEMP on every flight, even if the default fits: the FMS uses it for REC MAX FL. Leave TROPO at the default (36 090 ft). The distance can be taken from the Route tab with “From route”.
| Situation | Minimum |
|---|---|
| Takeoff | 5 s after liftoff |
| After a manual go-around | 100 ft AGL |
| F-G/S, V/S, FPA, APP-DES | 200 ft AGL |
| G/S + APPR1 | 160 ft AGL |
| G/S + LAND1/2/3 | 0 ft autoland / 80 ft |
| Other phases | 500 ft AGL |
| Configuration | Limit |
|---|---|
| CLEAN | VMO 340 kt / MMO 0.89 |
| CONF 1 | 260 kt |
| CONF 1+F | 231 kt (ARS → 1 at 221 kt) |
| CONF 2 | 219 kt |
| CONF 3 | 206 kt |
| CONF FULL | 192 kt |
| Gear extension / extended | 250 kt / M 0.55 |
| Tyre speed (ground speed) | 213 kt |
| VMCL | 123 kt |
| Item | t |
|---|---|
| Max taxi | 308.9 |
| MTOW | 308.0 |
| MLW | 233.0 |
| MZFW | 220.0 |
| Min takeoff | 155.0 |
| Min landing / in flight | 138.0 |