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# UnregisterExtComponent (UORB message)

**TOPICS:** unregister_ext_component

## Fields

| Name             | Type       | Unit [Frame] | Range/Enum | Description                                         |
| ---------------- | ---------- | ------------ | ---------- | --------------------------------------------------- |
| timestamp        | `uint64`   |              |            | time since system start (microseconds)              |
| name             | `char[25]` |              |            | either the mode name, or component name             |
| arming_check_id  | `int8`     |              |            | arming check registration ID (-1 if not registered) |
| mode_id          | `int8`     |              |            | assigned mode ID (-1 if not registered)             |
| mode_executor_id | `int8`     |              |            | assigned mode executor ID (-1 if not registered)    |

## Constants

| Name                                          | Type     | Value | Description |
| --------------------------------------------- | -------- | ----- | ----------- |
| <a id="#MESSAGE_VERSION"></a> MESSAGE_VERSION | `uint32` | 0     |

## Source Message

[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/versioned/UnregisterExtComponent.msg)

::: details Click here to see original file

```c
uint32 MESSAGE_VERSION = 0

uint64 timestamp # time since system start (microseconds)

char[25] name                      # either the mode name, or component name

int8 arming_check_id      # arming check registration ID (-1 if not registered)
int8 mode_id              # assigned mode ID (-1 if not registered)
int8 mode_executor_id     # assigned mode executor ID (-1 if not registered)
```

:::