> For the complete documentation index, see [llms.txt](https://docs.freeflysystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.freeflysystems.com/products/products/alta-8-pro/operating-alta-pro/aircraft-monitor.md).
# Aircraft Monitor
ALTA Pro QGroundControl includes a flight status monitor that displays information about the health of the ALTA Pro and the various controls that can be selected.
| **Icon** | **Name** | **Description** |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|  | Boot | Indicates if the PX4 has completed its booting process and whether it was successful. Any issues that prevented a normal boot are indicated here. |
|  | Battery | Displays the voltage of the battery packs. |
|  | Status | Displays the state of the PX4 flight controller. |
|  | Radio | Displays if the PX4 detects a radio controller signal. A LOS warning is displayed if no signal is present. |
|  | GPS
| Displays if PX4 has resolved a GPS fix or not. |
|  | Sats | Displays the number of GPS satellites in view and being received. A minimum of 6 satellites are required in order to enter Position Mode. |
|  | Lock | Clicking on this icon displays whether a position lock is ready, indicating a valid GPS fix and good heading. This is required before the Autopilot will allow switching into Position Mode. |
|  | Altitude | Displays the current height control mode: Manual, Vario if in Height or Position mode and climbing or descending, and Hold. |
|  | Attitude | Displays the current attitude control mode. |
|  | Compass | Displays the status of the compass and if the Autopilot believes the compass readings are good or bad. If Bad, the compass may require recalibration (see the Compass Calibration section in this manual). |
|  | Speed | Displays ground speed. |
|  | Flight Time | Displays the amount to time the aircraft has been flying**.** |
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.freeflysystems.com/products/products/alta-8-pro/operating-alta-pro/aircraft-monitor.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.