PX4-Autopilot/docs/en/msg_docs/FailureDetectorStatus.md
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pageClass: is-wide-page
---
# FailureDetectorStatus (UORB message)
**TOPICS:** failure_detector_status
## Fields
| Name | Type | Unit [Frame] | Range/Enum | Description |
| ---------------------- | --------- | ------------ | ---------- | --------------------------------------------------------------- |
| timestamp | `uint64` | | | time since system start (microseconds) |
| fd_roll | `bool` | | |
| fd_pitch | `bool` | | |
| fd_alt | `bool` | | |
| fd_ext | `bool` | | |
| fd_arm_escs | `bool` | | |
| fd_battery | `bool` | | |
| fd_imbalanced_prop | `bool` | | |
| fd_motor | `bool` | | |
| imbalanced_prop_metric | `float32` | | | Metric of the imbalanced propeller check (low-passed) |
| motor_failure_mask | `uint16` | | | Bit-mask with motor indices, indicating critical motor failures |
| motor_stop_mask | `uint16` | | | Bitmaks of motors stopped by failure injection |
## Source Message
[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/FailureDetectorStatus.msg)
::: details Click here to see original file
```c
uint64 timestamp # time since system start (microseconds)
# FailureDetector status
bool fd_roll
bool fd_pitch
bool fd_alt
bool fd_ext
bool fd_arm_escs
bool fd_battery
bool fd_imbalanced_prop
bool fd_motor
float32 imbalanced_prop_metric # Metric of the imbalanced propeller check (low-passed)
uint16 motor_failure_mask # Bit-mask with motor indices, indicating critical motor failures
uint16 motor_stop_mask # Bitmaks of motors stopped by failure injection
```
:::