MOTOR_BRAKING_PERMANENTLY
Applicable alarms (1)
Likely outcomes — click to expand
Based on 13 missions where this alarm fired in the last 90 days as of 2026-10-13
Grounding vs discrepancy (of 14 ZERP issues filed on these missions)
Frequently replaced parts
| Part | P/N | Removals |
|---|---|---|
| MIXED MOTOR ASSY, ZIP, P2 | 25263 | 14 |
| MIXED PROPELLER BLADE, ZIP, P2 | 26014 | 12 |
| AFT MOTOR ASSY, ZIP, P2 | 23548 | 7 |
| BATTERY ASSY, ZIP, P2 | 27158 | 7 |
| CCW HOVER MOTOR ASSY, ZIP, P2 | 19607 | 6 |
Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.
Background
Section titled “Background”When this alarm is raised, inspect the propeller installed on the motor that sets MOTOR_BRAKING_PERMANENTLY.
Troubleshooting Steps
Section titled “Troubleshooting Steps”graph TD
inspect-affected-propeller["<small><b>Step 1</b></small><br/>Action: Identify the propulsion motor that se..."]
escalate-to-firmware-motors{{"<small><b>Step 2</b></small><br/>Escalation: Escalate to P2 Firmware Motors On Call"}}
inspect-affected-propeller --> escalate-to-firmware-motors
style inspect-affected-propeller fill:#dcfce7,stroke:#22c55e,color:#14532d
style escalate-to-firmware-motors fill:#fef3c7,stroke:#f59e0b,color:#78350f Hover or focus a block to preview it. Select the block to keep the preview open.
MOTOR_BRAKING_PERMANENTLY. Inspect the propeller installed on that motor for obvious damage.EV2 Procedures:
- 60.3.2.a Inspect Hover Propeller - General
- 60.3.1 Hover Propeller Damage Limits
- 60.5.2.a Inspect Mixed Propeller - General
- 60.5.1 Mixed Propeller Damage Limits
EV3 Procedures:
- 60.3.2.a Inspect Hover Propeller
- 60.3.1 Hover Propeller Damage Limits
- 60.5.2.a Inspect Mixed Propeller
- 60.5.1 Mixed Propeller Damage Limits
Resolution note
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