Where every flight is CAVOK.
AI-powered pre-flight briefing for MSFS 2020/2024, X-Plane 12 & Prepar3D. Real weather. Real airspace. Realistic planning — all in your browser.
Start Planning for FreeFor flight simulator entertainment only · Not for real aviation use
What you get
SimCAVOK pulls live data from public aviation APIs and runs it through an AI layer so you get a realistic briefing in seconds.
Direct, VOR/DME, or fully manual routing. Click waypoints on the Leaflet map or type ICAO codes — your choice.
Live METARs from aviationweather.gov with automatic VFR/MVFR/IFR/LIFR classification, plus current NOTAMs per station — categorised by runway, navaid, airspace and more.
OpenAIP airspace polygons loaded into PostGIS. CTR, RMZ, TMZ and Restricted zones highlighted on your route — with automatic avoidance waypoints on request.
Per-leg fuel burn with wind correction, trip total, 45-minute reserve and taxi allowance — with a clear GO / CAUTION / NO-GO verdict.
Route, weather, NOTAMs, airspace and fuel go to the AI layer (OpenRouter — model of your choice). Streaming narrative briefing that explains the GO / CAUTION / NO-GO verdict.
Export your route as an MSFS 2020/2024 .pln file, prefile it on VATSIM, or download the full briefing with nav log as HTML or PDF — subscribers get a clean PDF with their callsign and logo.
The workflow
SimCAVOK runs your flight through a structured pipeline — deterministic calculations first, AI narrative last.
Enter departure, destination, aircraft profile and cruise altitude. ICAO codes are validated against airport data.
Direct, VOR/DME or manual routing. Each leg is checked against airspace polygons in PostGIS — conflicts can be avoided automatically.
METARs and NOTAMs are fetched in parallel, parsed and categorised, and every station gets its VFR category.
Leg-by-leg navigation log with ETE, fuel burn, wind correction angle, and total endurance margin calculated deterministically.
The structured flight data goes to the AI layer. The verdict itself is computed deterministically — the streaming briefing explains it: weather, NOTAMs, airspace, navigation and fuel.
Pricing
Start for free. Upgrade when you want more.
Free
€0 / month
Just open the app and start planning. No credit card needed.
Subscriber
€4.99 / month
or €39.99 / year — save 33%
For the sim pilot who flies regularly and wants the full experience.
Weekend Pass
€2.99 one-time · 48 h
A full-feature weekend of flying — no subscription, just a free account.
All prices include 19% VAT. Cancel the subscription anytime — no minimum term.
SimCAVOK is exclusively an entertainment and educational tool for flight simulator software (MSFS 2020/2024, X-Plane 12, Prepar3D). It is not intended for use by real pilots, does not replace any certified pre-flight briefing service, and holds no aviation certification of any kind. No B2B use in flight schools. Weather and NOTAM data displayed may be delayed, incomplete or inaccurate. Always obtain an official briefing before any real flight.