These are the built-in maintenance categories. Calendar-based events (Annual, Transponder, Pitot-static, ELT battery) use end-of-month grace so that e.g. an Annual completed on April 1 is not due until April 30 the following year.
| Category | Default interval | Due calculation |
|---|
JSON backup includes all data in one file and can be fully restored. CSV exports are per-table and can be opened in Excel or Google Sheets. CSV import appends rows — it does not overwrite existing data.