Instant mass & balance.
No calculators, no paper forms. One minute.
The handheld Loadsheet Computer calculates ZFW/TOW/LW and CG, validates limits, and prints a compliant loadsheet—right from the aircraft. Aircraft data comes from the AHM and lives on the device.
Why crews love it
One‑minute loadsheet
Stop hunting paper charts. Turn the encoder, confirm inputs, and the loadsheet is ready—fast.
AHM‑based database
Each aircraft’s data comes from its AHM and is stored on the device. Add or update aircraft in a click.
On‑device printing
Thermal printer outputs a neat hardcopy—ready for captain’s signature and records.
OTA & web tools
Update databases and firmware over the air. Use the built‑in web UI to manage Wi‑Fi, files, and print.
Smart inputs
Encoder increments tuned for ops: pax ±1, baggage ±10, fuel ±100. Back button to revise any step.
Safety‑first checks
CG envelopes visualized on the OLED. Instant validation at ZFW, TOW, and LW—no surprises.
How it works
1Insert the flight details
The sity pair will be prepopulated if flight is found in database. Pick registration from the list. Choose flight type and crew.
2Dial the numbers
Enter pax, baggage and fuel with the encoder. The device guards ranges automatically.
3Review & print
See CG vs envelopes on the OLED, then print a compliant loadsheet to the thermal printer.
Technical highlights
- Microcontroller: ESP8266 (LittleFS storage)
- Display: 2.4″ OLED, 128×64, single‑color
- Inputs: Rotary encoder with push + Back button
- Printer: 58mm thermal (UART)
- Config: JSON aircraft profiles
- Features: CG envelope plot, ZFW/TOW/LW, purser briefing, web printing
- Updates: OTA firmware + aircraft DB updates
- Power: Internal battery with level monitor
The firmware is modular and loads configuration from JSON. Web UI supports Wi‑Fi editing that preserves non‑edited keys (e.g., update SSID/password while keeping the current update URL). Printing works both from the device and the web page.
Need custom logic (e.g., aircraft‑specific indexing, cargo distribution, or CG visuals)? The code is designed for quick extension.
FAQ
Does it work offline?
Yes. All calculations run on‑device. You only need connectivity for OTA updates (optional).
How fast is it?
Most loadsheets are produced in under a minute thanks to encoder‑tuned input steps and smart validation.
Can I add or update aircraft?
Absolutely. Upload a new JSON or update an existing one—no recompiling needed.
Can I print a web preview?
Yes. The device can render and print the same formatted loadsheet, mirroring the thermal printout to the computer screen.
Can I see a previously printed loadsheet?
Yes. The device stores all the printed loadsheets in its flash memory. Select WebServer on device menu, connect your phone/tablet to the device's WiFi and you'll get access to all loadhseets ever printed.
Watch it in action
Live demonstration of the Loadsheet Computer in use.