# Flight logs readout

The **Flights** page has two tabs:

- **Connected [model]** - logs currently stored on the selected device.
- **Local files** - flights imported into the application's archive.

Counts may show a dash while data is loading.

:::caution[Protect your original flight data]
Use **Import locally** before deleting a device log. A local copy remains available without a connected Nano, while deleting the device file cannot be undone.
:::

## Connected device logs

Each row shows the source filename, device model, **Imported**, **Device log**, or **Unreadable** status, altitude, maximum velocity, duration when analysis is available, and device serial number when available.

For a readable log:

- **Open flight** opens [Mission replay](/software/mission-replay/) directly from the device.
- **Import locally** copies the flight into the local archive while leaving the device log in place.
- **Delete file** removes the log from the device after confirmation.

An imported device log cannot be imported again, but it can still be opened from the device and managed in the local tab.

## Unreadable logs

Unreadable logs show the read or analysis error and have no replay or import action. Invalid CSV content, missing or invalid timing data, unsupported values, or another read error can make a log unreadable.

:::note[When troubleshooting]
Record the displayed error and the affected filename first. See [Troubleshooting](/troubleshooting/) for general Nano issues.
:::

## Local archive files

Each local row shows the source filename, **Nominal** or the number of data-quality warnings, maximum altitude, maximum velocity, duration, source device serial number, sample count, and import date.

- **Open flight** opens [Mission replay](/software/mission-replay/) from the local archive.
- **Export CSV** opens a save dialog and writes a CSV copy. The dialog defaults to the source filename and filters for CSV files.
- **Delete** removes the local archive entry after confirmation. It does not affect the original device log.

![Local files tab with one imported flight showing altitude, maximum velocity, duration, warnings, and the Open flight, Export CSV and Delete actions](../../../assets/mc-flights-local-archive.png)

## Empty and unavailable states

- **Local library is empty** means no flight has been imported yet.
- **Connected flight computer unavailable** means the device-log query failed; the local library remains usable.
- **No device flight logs** means the selected computer exposes no logs.
- A loading message appears while either source is being read.

## Recommended workflow

1. Open Flights and select **Connected [model]**.
2. Confirm that the log is readable.
3. Select **Import locally** to preserve a copy.
4. Open the local flight when offline review is needed.
5. Use [Mission replay](/software/mission-replay/) to inspect telemetry and flight phases.
6. Export CSV for external analysis when required.
7. Delete the local copy only when it is no longer needed.

:::tip[Safe device handling]
Keep the Nano connected and mounted while importing or deleting logs. When finished, use the normal safe-eject workflow before disconnecting.
:::