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Zipline Zipline Service Documentation

    MIXED_ROTOR_SLIP_SUSPECTED

    published Last Updated: Oct 9, 2026 HW: all
    Applicable alarms (1)
    MIXED_ROTOR_SLIP_SUSPECTED
    Likely outcomes (0 missions) — 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.

    Background

    Section titled “Background”

    This alarm triggers when mixed motor rotor slip is suspected, meaning the motor rotor debonds from the housing and causes freewheeling due to a lack of adhesion.

    This issue can be identified in logs by looking for instances where motor speed (omega) deviates from commanded torque (torque).

    Reference Examples

    Section titled “Reference Examples”

    Confirmed rotor slip example

    Confirmed mixed rotor slip example

    No rotor slip example

    No mixed rotor slip example

    Troubleshooting Steps

    Section titled “Troubleshooting Steps”
    1 telemetry
    Enter the failed mission ID to load the Mixed Rotor Slip Suspected plot. It includes task_name, mixed feedback state omega, and mixed feedback state torque.

    Paste the mission identifier from the alarm report. The mixed-rotor-slip-suspected plot loads in place below.

    Enter the mission identifier above to load the plot.

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    Topic history
    1. 2026-10-07 Susan Minne Bulk/mechanical change
      Replace individual guide ownership with system technical contacts
      Commit dca5a1a
    2. 2026-09-24 Susan Minne Bulk/mechanical change
      chore: backfill aircraft owner identities batch 3
      Commit 8ff7b9b
    3. 2026-09-23 Susan Minne Bulk/mechanical change
      docs: remove obsolete Confluence metadata
      Commit 2d5374e
    4. 2026-09-13 Susan Minne Bulk/mechanical change
      feat: add MX approval metadata to topics
      Commit 406a785
    5. 2026-07-21 Dylan Woodhead
      docs: embed mixed rotor slip Baraza plot
      Commit 9d2a123
    6. 2026-05-28 Susan Minne Bulk/mechanical change
      Remove redundant topic applicability banners
      Commit e561ad0
    7. 2026-05-26 Dylan Woodhead
      Use canonical firmware motors escalation path
      Commit 77c0f73
    8. 2026-05-26 Dylan Woodhead
      Set mixed rotor slip guide owner and publish status
      Commit 05fddf4
    Baseline import
    Initial import into service_docs
    Imported by Dylan Woodhead on 2026-05-26
    Add MIXED_ROTOR_SLIP_SUSPECTED draft troubleshooting guide
    Commit cbbb0c4
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