EZWB User Guide

Overview

EZWB is a weight and balance planning app for supported aircraft. The app combines saved aircraft, aircraft templates, an interactive worksheet, a live envelope graph, PDF reports, iCloud sync, and StoreKit template purchases.

The Cessna 152 template is included. Additional aircraft templates can be previewed before purchase, restored later, and synced across devices when iCloud is available.

Main Areas

• Aircraft - saved aircraft and worksheet entry
• Templates - included and purchasable aircraft templates
• Reports - saved PDF reports, newest first
• Settings - units, iCloud status, purchase restore, sync troubleshooting, and support information

Aircraft Templates

Templates define station names, arms, fuel properties, and the approved weight and balance envelope for a model or model family.

• Use the search field to find aircraft by model, family, or common terms such as Bonanza, Comanche, or 182.
• Tap Preview to view a PDF preview of the template envelope and station data before purchasing.
• Tap the purchase button to buy a non-consumable template using StoreKit.
• Use Restore Purchases in Settings if a purchased template does not appear automatically on a different device.

Template purchases unlock template data; they do not replace the pilot's responsibility to verify the template against the current aircraft POH/AFM.

Aircraft Setup

From the Aircraft tab, tap the add button to create a saved aircraft from an available template.

Required Setup Fields

• Aircraft template
• Tail number
• Empty weight
• Empty CG
• Station arm overrides where your aircraft differs from the default template station arms

Station arms can be edited for the saved aircraft. Envelope limits are not editable in the app because they are part of the template's aircraft-specific limit data.

Worksheet

The worksheet screen keeps the graph visible while you adjust loading values. The graph updates immediately as passenger, baggage, fuel, flight time, and burn-rate values change.

Graph Points

• Takeoff - aircraft state at departure with usable fuel loaded
• Landing - aircraft state after planned fuel burn
• Zero Fuel - aircraft state without usable fuel

Status Colors

The graph and status area indicate whether the current loading is within limits, overweight, out of balance, or has insufficient fuel for the entered plan.

Units

Use Settings to switch between US and metric display values. Templates retain their source data while displayed values convert for the selected unit preference.

PDF Reports

Tap the report preview/share button from the worksheet to generate a PDF preview. From the preview you can share or export the report using the system share sheet.

Generated reports are saved to the Reports tab and sorted newest first. Tap a report row to reopen the PDF preview.

The report includes the weight and balance graph, flight summary, station loading table, and the required pilot responsibility disclaimer.

iCloud Sync

When iCloud is available, EZWB syncs saved aircraft and report records across devices using the app's iCloud container.

Troubleshooting Sync

• Verify both devices are signed into the intended iCloud account.
• Open Settings and check the iCloud status and record counts.
• Use Sync Data Again to prompt a refresh.
• If templates are missing after reinstalling or changing devices, use Restore Purchases.

Troubleshooting

A purchased template is not available

Wait briefly after launch while StoreKit checks purchases. If the row still shows restore messaging, tap Restore Purchases in Settings.

A template preview or download fails

Check internet connectivity. Purchased template data is downloaded when needed; once available, the aircraft can be used without an internet connection.

Aircraft or reports are not syncing

Check iCloud account status on each device, confirm the app is using the same iCloud container, then use Sync Data Again from Settings.

Numbers do not match an aircraft document

Verify the selected template and station arms against the current aircraft POH/AFM and current weight and balance data. If your aircraft differs materially from the available template, contact support before relying on the output.

Safety Notice