DOCK_RELAY_FAILED_TO_OPEN
Applicable alarms (1)
Likely outcomes — click to expand
Based on 32 missions where this alarm fired in the last 90 days as of 2026-10-13
Grounding vs discrepancy (of 2 ZERP issues filed on these missions)
Frequently co-occurring alarms (% of the 32 missions above)
Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.
Background
Section titled “Background”The Aircraft battery can’t begin charging because the Dock’s charger relay isn’t confirming that it opened when the distro commanded it to.
If the relay doesn’t report open at that moment, whether due to a mechanical issue, communication fault, or an electrical problem, this alarm is set and charging is blocked.
Troubleshooting Steps
Section titled “Troubleshooting Steps”graph TD
at-the-moment-that-this-alarm-displays{"<small><b>Step 1</b></small><br/>Question: At the moment that this alarm display..."}
troubleshoot-the-dock-starting-with-th["<small><b>Step 2</b></small><br/>Action: Troubleshoot the Dock starting with t..."]
escalate-to-p2-dock-hw-on-call{{"<small><b>Step 3</b></small><br/>Escalation: Escalate to P2 Dock Hardware On Call"}}
at-the-moment-that-this-alarm-displays -->|Yes| troubleshoot-the-dock-starting-with-th
at-the-moment-that-this-alarm-displays -->|No| escalate-to-p2-dock-hw-on-call
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style troubleshoot-the-dock-starting-with-th fill:#dcfce7,stroke:#22c55e,color:#14532d
style escalate-to-p2-dock-hw-on-call fill:#fef3c7,stroke:#f59e0b,color:#78350f Hover or focus a block to preview it. Select the block to keep the preview open.
Resolution note
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