IN-FLIGHT User Guide

Free, offline-capable flight planning and navigation for VFR and IFR pilots.

IN-FLIGHT is a web-based flight planning tool that generates navigation logs and tracks GPS position—no subscriptions, no account required, works offline after initial setup.

DISCLAIMER This is a flight planning tool, not a certified navigation system. Use it for planning and backup, not as your primary navigation source. Always verify routes and data against current charts and NOTAMs.

What It Does

• Parses IFR route syntax (airways, SIDs, STARs, DPs)
• Generates navigation logs with magnetic courses, distances, ETEs
• Displays GPS moving map with auto-waypoint advancement
• Calculates fuel burn with multi-altitude wind interpolation
• Works offline after initial database load (70,000+ airports, 10,000+ navaids)

What it's NOT: An approach plate viewer, weather briefing tool, or certified GPS. Bring your own charts and weather.

Quick Start

1. Load the database (one-time, ~5MB)
2. Enter a route like KISP APE EWC ETG J217 HNK STELA1 KBDL
3. Hit COMPUTE to expand airways and procedures
4. Review navlog with courses, distances, fuel
5. GPS auto-enables when you grant location permissions

Common Use Cases

VFR Cross-Country Planning

• Verify hand-calculated headings and distances
• Run what-if scenarios with different altitudes
• Get accurate ground speeds with interpolated winds
• Print or save navlogs for reference

IFR Route Planning

Enter routes using standard FMS syntax:

KBOS PAYGE SSOXS V3 SAX J57 LRP LENDY6 KLGA

COMPUTE expands SIDs, airways, and STARs into a full navlog with fuel and time calculations. Edit the route string for ATC reroutes—no clicking through menus.

Note: For filing IFR, you typically file the route as-is (e.g., KBOS PAYGE3 V3 SAX J57 LENDY6 KLGA). IN-FLIGHT expands procedures to show you every waypoint for situational awareness and navlog generation.

Training Aid

Practice FMS route entry syntax without sim time. Context-aware autocomplete shows only relevant airways/fixes based on your current position in the route.

Backup Navigation

Install as a PWA for offline access. If your primary EFB fails, you still have navlog and moving map.

Key Features

Context-Aware Autocomplete: After typing a fix, see only airways from that fix. After typing an airway, see only fixes on that airway. Same logic as FMS autocomplete.

Multi-Altitude Wind Interpolation: Climbing through multiple altitudes on a leg? IN-FLIGHT calculates blended wind for accurate ground speed and fuel burn.

Automatic Flight Logging: GPS auto-detects takeoff (>50 kts), logs track with timestamps, detects landing (<30 kts). Exports as GeoJSON.

Auto-Waypoint Advancement: Moving map advances to next leg when passing abeam waypoint. Optional text-to-speech announcements.

One-Tap Diversions: Click any airport for instant route, fuel remaining, and ETA from current position.

Detailed Guides

• ROUTE Tab - Route entry syntax and autocomplete
• NAVLOG Tab - Navigation log and fuel calculations
• MAP Tab - GPS moving map and tracking
• WX Tab - Weather data (METAR, TAF, PIREPs, SIGMETs, G-AIRMETs)
• CHARTS Tab - FAA instrument procedures and airport diagrams
• IN-FLIGHT Tab - Real-time situational awareness and diversion planning
• CHKLST Tab - Customizable checklists
• STATS Tab - Flight statistics
• DATA Tab - Database management and flight exports

Requirements & Limitations

Required:

• Modern browser (Chrome/Firefox/Safari/Edge)
• Internet for initial database load (~5MB, one-time)
• Location permission for GPS features

Data Coverage:

• 70,000+ airports, 10,000+ navaids (global)
• US domestic procedures (SIDs/STARs/DPs)
• No oceanic routes or NAT tracks

Not Included:

• Approach plates (use FAA charts/ForeFlight)
• NOTAMs/TFRs (check official sources)
• Weather imagery (use AWC/ForeFlight)
• Weight & balance

Important: Aviation data is not AIRAC-cycle certified. Always verify against current charts.

Troubleshooting

• FAQ - Common questions
• Troubleshooting Guide - Technical issues
• GitHub Issues - Bug reports

Ready to fly? → Load the database and start planning.