Avoid delays. Save fuel. Load it right the first time.
Self-service weight & balance for commercial airlines. Configure your fleet, calculate across all flight phases, and get load instructions that tell your crew exactly what to move — in minutes, not months.
114,320 lbs
132,320 lbs
26.4% MAC
24.1% MAC
2–5%
Fuel savings annually with aft CG targeting
4
Flight phases checked — ground, takeoff, enroute, landing
$0
To start — free tier with demo aircraft included
Why Datum
Load smarter, not harder
Save fuel
Aft CG targeting reduces trim drag. Airlines see 2–5% annual fuel savings by loading closer to the aft limit — Datum calculates the optimal position automatically.
Prevent rework
Catch bad loading before it happens, not after. Datum checks weight and CG across all four flight phases and generates corrective load instructions before doors close.
Self-service
Configure your fleet in minutes with 5–6 data points from your flight manual. No vendor lock-in, no million-dollar contracts. Sign up and start calculating.
How it works
Three steps from setup to results
Configure your fleet
Enter 5–6 data points per aircraft type from your flight manual: OEW, fuel density curve, CG envelope, weight limits, seat layout, and cargo compartments.
Enter flight data
Input your fuel plan, passenger manifest by zone, and cargo distribution. Pre-populated defaults from your aircraft config save time on every flight.
Get results + load instructions
Instant W&B across all phases, visual envelope charts, and specific load instructions — move X bags forward, reseat Y passengers aft.
What you get
Everything you need for accurate weight & balance
- W&B across all flight phases
- ZFW, TOW, LW, and MRW with CG in fuselage station and %MAC. Fuel interpolation from manufacturer density curves.
- Envelope visualization
- Interactive weight/CG charts showing your position against certified limits for ground, takeoff, enroute, and landing phases.
- Load instruction generation
- Automatic corrective actions when CG is out of limits — cargo moves and passenger reseating, prioritizing cargo moves over pax disruption.
- Calculation audit trail
- Every calculation stored as a full JSON snapshot — inputs, outputs, and envelope status. Review or reproduce any result.
- Multi-tenant isolation
- Your airline's data is completely isolated. Each organization has its own fleet, flights, and calculations.
Enterprise
Need deeper integration?
Connect Datum to your existing ops systems for a seamless workflow.
Ops system integration
Connect to your departure control, flight planning, and crew management systems.
Bulk fleet import
Import your entire fleet configuration from spreadsheets or existing systems.
API access
Programmatic access to calculations for automated workflows and custom tooling.
Custom development
Tailored features and workflows built for your airline's specific operational needs.
Try it free with demo aircraft.
Add your fleet when you're ready. No contracts, no commitments.