Weight & Balance

Plan flights safely and confidently.

With the integrated Weight & Balance module in the eAvio platform, every flight order is automatically checked against the aircraft’s certified limits.

Define your aircraft configuration once, and eAvio platform will guide you through each flight order with clear CG & weight visualization and complete traceability.

Weight & Balance (W&B) module in the eAvio platform ensures that every flight is conducted within the aircraft’s certified loading limits.

It is seamlessly integrated into your workflow:

1. Aircraft module – where you configure the Weight & Balance data for each aircraft

2. Flight Orders – where the configured data is used to calculate and validate your Weight & Balance for each flight

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1. Configuring Weight & Balance

Weight & Balance is configured in the Weight & Balance Configuration section of the aircraft in the eAvio platform.

Here you can define all parameters that affect the weight and balance of your aircraft:

• Basic configuration

  • Aircraft empty weight and center of gravity (CG)

  • Maximum gross weight and (optionally) maneuvering speed

  • Units for weight (lbs/kg) and arm/CG (in/cm) – this determines how all values are interpreted

  • Optional link to a source page for this configuration (manual PDF, reference website, or other source)

• Seats

  • Define the position (arm) for each seat

  • Example: Pilot, Co‑Pilot, Rear Left, Rear Right

  • Seat weights are entered in the flight order based on standard passenger weights from the configuration

• Baggage / Storage areas

  • Define one or more baggage compartments with their arms and maximum allowed weight

  • Can be marked read‑only if a fixed load is always present

• Fuel configuration

  • Define the fuel tank arm, maximum fuel capacity, and fuel density

  • The calculator will convert fuel volume to weight automatically

• Extra equipment (optional)

  • Define any permanent or optional equipment affecting weight and CG

  • Can be read‑only for permanently installed items

• Weight & Balance envelope(s)

  • Define one or more polygons representing the safe CG vs Weight area

  • For each point, enter Weight and CG

  • These envelopes are used for Weight & Balance calculations in Flight Orders

  • If the aircraft’s calculated CG/Weight is outside the envelope, submitting the flight order will not be possible

📸 Screenshot 📸 Screenshot – Aircraft Preset Dropdown

Full Weight & Balance Configuration Section

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Using Aircraft Presets

• eAvio includes presets for many common aircraft types (e.g., Cessna, Piper, Cirrus).

• Selecting a preset loads a template with typical seats, baggage areas, fuel tanks, and envelopes.

• You must always adjust the configuration for your specific aircraft:

  • Actual empty weight

  • Actual CG position

  • Installed equipment and modifications

  • Maximum gross weight and maneuvering speed

📸 Screenshot – Aircraft Preset Dropdown

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Read‑only Weights

• Storage areas and extra equipment can be marked read‑only

• Useful for:

  • Always‑present training ballast

  • Permanent baggage items

• These weights are automatically included in calculations and cannot be changed in flight orders

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2. Weight & Balance in Flight Orders

Once an aircraft has a valid Weight & Balance configuration:

• The Weight & Balance calculator will appear automatically in the Flight Order form

• eAvio pre‑fills Pilot and Student/Instructor seats according to the configuration

Seat Assignment Logic

• Passengers are assigned to seats in order:

  1. First passenger → Left front seat (Pilot)

  2. Second passenger → Right front seat (Co‑Pilot)

  3. Third passenger → Left rear seat

  4. Fourth passenger → Right rear seat

• Standard weights are used based on passenger type: male, female, child, infant

• These weights can be manually adjusted in the calculator if needed

Data Entry in Flight Orders

Depending on the aircraft configuration, you may be able to enter:

• Fuel quantity – automatically converted to weight

• Additional passengers – up to the number of seats configured

• Baggage – if storage areas exist for this aircraft

• Extra equipment – if the configuration allows adjustments

A real‑time envelope chart shows:

• A moving dot representing your current CG and total weight

• Whether the aircraft is inside the safe envelope

Submission rule:

• Inside the envelope: The flight order can be submitted

• Outside the envelope: Submission is blocked until the load is adjusted

📸 Screenshot – Flight Order with Weight & Balance Calculator

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3. Snapshots and Flight History

Every submitted flight order automatically stores a snapshot of its Weight & Balance calculation.

• The snapshot shows exactly how the aircraft was loaded at the time of submission

• Snapshots remain unchanged even if the aircraft configuration is later updated

Note: Snapshots are stored to provide full traceability and allow you to demonstrate to inspectors what was entered by the pilot for any specific flight.

📸 Screenshot – Snapshot View in a Submitted Flight Order

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4. Advanced Users – JSON Mode

For advanced users, the Weight & Balance Configuration section also offers JSON Mode:

• Displays the entire configuration as JSON

• Allows advanced editing or preparation of configs with external tools

• Useful for:

  • Copying configurations between similar aircraft

  • Bulk editing seat or envelope data

⚠ Only recommended for users familiar with aircraft weight and balance principles.

Incorrect entries can make calculations invalid.

📸 Screenshot – JSON Mode Example/