BOOM_UNEXPECTED_ANGLE
This alarm is covered by this guide. Applicable alarms (3)
Likely outcomes — click to expand
Based on 0 missions where this alarm fired in the last
90 days
(for BOOM_UNEXPECTED_ANGLE) as of 2026-10-13
Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.
Background
Section titled “Background”This check validates boom orientation from high-G accelerometer telemetry during preflight. If it fails, it may indicate:
- Actual boom or tail is broken and at an unexpected angle, or
- bad/missing high-G telemetry during the check window.
Troubleshooting Steps
Section titled “Troubleshooting Steps”graph TD
is-motor-control-uninitialized-active{"<small><b>Step 1</b></small><br/>Question: Is MOTOR_CONTROL_UNINITIALIZED active?"}
this-failure-is-not-because-of-an-issu["<small><b>Step 2</b></small><br/>Action: This failure is not because of an iss..."]
identify-the-motor-that-caused-the-fai["<small><b>Step 3</b></small><br/>Action: Identify the motor that caused the fa..."]
is-the-boom-associated-with-that-motor{"<small><b>Step 4</b></small><br/>Question: Is the boom associated with that moto..."}
service-the-aircraft["<small><b>Step 5</b></small><br/>Action: Service the aircraft."]
the-aircraft-may-return-to-service("<small><b>Step 6</b></small><br/>Reference: The aircraft may return to service.")
is-motor-control-uninitialized-active -->|Yes| this-failure-is-not-because-of-an-issu
is-motor-control-uninitialized-active -->|No| identify-the-motor-that-caused-the-fai
identify-the-motor-that-caused-the-fai --> is-the-boom-associated-with-that-motor
is-the-boom-associated-with-that-motor -->|Yes| service-the-aircraft
is-the-boom-associated-with-that-motor -->|No| the-aircraft-may-return-to-service
style is-motor-control-uninitialized-active fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style this-failure-is-not-because-of-an-issu fill:#dcfce7,stroke:#22c55e,color:#14532d
style identify-the-motor-that-caused-the-fai fill:#dcfce7,stroke:#22c55e,color:#14532d
style is-the-boom-associated-with-that-motor fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style service-the-aircraft fill:#dcfce7,stroke:#22c55e,color:#14532d
style the-aircraft-may-return-to-service fill:#f3e8ff,stroke:#a855f7,color:#581c87 Hover or focus a block to preview it. Select the block to keep the preview open.
MOTOR_CONTROL_UNINITIALIZED active?Resolution note
This plaintext block is ready to paste into the Resolution Note field on the ZERP issue you're working. The permalink below gives engineering review access to the full step-by-step timeline including any back-navigation; share it if the case needs a deeper look.
Permalink:
Session is too large to fit in a URL. Use Download session JSON to share the timeline out-of-band.
Did this guide help you get unblocked?
Open suggestions
There are no open suggestions.
Open pull requests
There are no open pull requests.