Compass Swing & Deviation Card Log

a compass deviation card is required equipment (91.205); swings are due after avionics changes, magnetic interference events or when deviation exceeds limits. The detail that catches all aircraft: there's no fixed interval — the trigger is change, which is why the record matters more than a calendar. Encode the real next-due date here at every sign-off — including the end-of-month or interval-deduction quirks — and the badge carries the arithmetic from then on.

The aircraft (or the affected operation) is grounded as a matter of law until the inspection is completed — and operating anyway risks certificate action and voided insurance. There's no grace period in the rule; the grace period is whatever warning buffer you build, which is exactly what the amber badge is.

Only you. Entries live in your browser's local storage and never leave your device, so there is no account, no cloud sync and no one else with access. Because the data is device-local, export a CSV backup before clearing browser data or switching computers.

Yes — one click exports your complete inspection schedule as a CSV file that opens in Excel, Google Sheets or Numbers. The export preserves every column exactly as entered, so you can print it, attach it to paperwork, or hand it to an inspector, buyer or insurance underwriter as a supporting summary alongside your official records.