Reposition After Droid Left Behind

published HW: P2

Background

On software release 2026.15, a Zip Executive persistent-state bug can prevent a maintenance reposition after an Aircraft has left its Droid behind. The Aircraft can appear to be in a state where the Droid is neither stowed nor correctly recognized as left behind, so the maintenance reposition may fail until Zip Executive restarts.

The intended workaround is to restart Zip Executive without rebooting the rest of the Aircraft stack, then attempt the maintenance reposition. A reboot mission may be rejected by the same bug, and a full Aircraft power cycle can restart distro and leave the winch cutter reporting the wrong terminal state for this recovery path.

Troubleshooting Steps

graph TD
    which-software-version-are-you-on{"<small><b>Step 1</b></small><br/>Question: Which software version are you on?"}
    confirm-the-aircraft-is-post-dlb-on-2026-15{"<small><b>Step 2</b></small><br/>Question: Is this Aircraft docked after a confi..."}
    disregard-this-guide["<small><b>Step 3</b></small><br/>Action: This guide is only applicable to 2026..."]
    restart-zip-executive["<small><b>Step 4</b></small><br/>Action: In Fleet Wrangler, send the troublesh..."]
    wait-for-executive-to-recover["<small><b>Step 5</b></small><br/>Action: In Fleet Wrangler, wait until **Recen..."]
    retry-the-mx-reposition["<small><b>Step 6</b></small><br/>Action: Attempt the maintenance reposition ag..."]
    did-the-retry-complete{"<small><b>Step 7</b></small><br/>Question: Did the maintenance reposition comple..."}
    escalate-to-p2-exec{{"<small><b>Step 8</b></small><br/>Escalation: Escalate to P2 Exec On Call. Include ..."}}
    continue-normal-post-dlb-maintenance("<small><b>Step 9</b></small><br/>Reference: Continue the normal post-Droid Left B...")
    use-the-normal-troubleshooting-flow("<small><b>Step 10</b></small><br/>Reference: Use the normal troubleshooting flow f...")
    which-software-version-are-you-on -->|2026.15| confirm-the-aircraft-is-post-dlb-on-2026-15
    which-software-version-are-you-on -->|2026.15.1 or higher| disregard-this-guide
    confirm-the-aircraft-is-post-dlb-on-2026-15 -->|Yes| restart-zip-executive
    confirm-the-aircraft-is-post-dlb-on-2026-15 -->|No| use-the-normal-troubleshooting-flow
    restart-zip-executive --> wait-for-executive-to-recover
    wait-for-executive-to-recover --> retry-the-mx-reposition
    retry-the-mx-reposition --> did-the-retry-complete
    did-the-retry-complete -->|No| escalate-to-p2-exec
    did-the-retry-complete -->|Yes| continue-normal-post-dlb-maintenance
    style which-software-version-are-you-on fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
    style confirm-the-aircraft-is-post-dlb-on-2026-15 fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
    style disregard-this-guide fill:#dcfce7,stroke:#22c55e,color:#14532d
    style restart-zip-executive fill:#dcfce7,stroke:#22c55e,color:#14532d
    style wait-for-executive-to-recover fill:#dcfce7,stroke:#22c55e,color:#14532d
    style retry-the-mx-reposition fill:#dcfce7,stroke:#22c55e,color:#14532d
    style did-the-retry-complete fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
    style escalate-to-p2-exec fill:#fef3c7,stroke:#f59e0b,color:#78350f
    style continue-normal-post-dlb-maintenance fill:#f3e8ff,stroke:#a855f7,color:#581c87
    style use-the-normal-troubleshooting-flow fill:#f3e8ff,stroke:#a855f7,color:#581c87

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1 question

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