HW_BRICK_IMBALANCE_CRITICAL
Applicable alarms (1)
Likely outcomes — click to expand
Based on 0 missions where this alarm fired in the last 90 days as of 2026-10-13
Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.
Applicable to all hardware versions
Background
Section titled “Background”This alarm occurs when the Aircraft battery bricks are severely imbalanced.
Troubleshooting Steps
Section titled “Troubleshooting Steps”graph TD
load-the-failed-mission-and-inspect-the-plot["<small><b>Step 1</b></small><br/>Telemetry: Enter the mission ID from the failed ..."]
was-it-only-a-single-failed-datapoint{"<small><b>Step 2</b></small><br/>Question: Does the imbalance plot show only a s..."}
single-erroneous-datapoint-return-to-service["<small><b>Step 3</b></small><br/>Action: The imbalance alarm was triggered by ..."]
more-than-one-exceeding-datapoints-swap-the-battery{{"<small><b>Step 4</b></small><br/>Escalation: Escalate to Powertrain On Call."}}
escalate-to-pwt-on-call{{"<small><b>Step 5</b></small><br/>Escalation: Escalate to Powertrain On Call."}}
load-the-failed-mission-and-inspect-the-plot --> was-it-only-a-single-failed-datapoint
was-it-only-a-single-failed-datapoint -->|One Exceeding Datapoint| single-erroneous-datapoint-return-to-service
was-it-only-a-single-failed-datapoint -->|More than 1 Exceeding Datap...| more-than-one-exceeding-datapoints-swap-the-battery
was-it-only-a-single-failed-datapoint -->|Cannot Confidently Read/Det...| escalate-to-pwt-on-call
style was-it-only-a-single-failed-datapoint fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style single-erroneous-datapoint-return-to-service fill:#dcfce7,stroke:#22c55e,color:#14532d
style more-than-one-exceeding-datapoints-swap-the-battery fill:#fef3c7,stroke:#f59e0b,color:#78350f
style escalate-to-pwt-on-call fill:#fef3c7,stroke:#f59e0b,color:#78350f Hover or focus a block to preview it. Select the block to keep the preview open.
This is a single erroneous reading with a slow decreasing ramp because of our filtering logic. Missions that look like this should NOT cause a battery swap.
Resolution note
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