Skip to content
Zipline Zipline Service Documentation

    AVIONICS_A_VBAT_VOLTAGE_UNAVAILABLE

    published Last Updated: Oct 9, 2026 HW: all
    Applicable alarms (3)
    AVIONICS_A_VBAT_VOLTAGE_UNAVAILABLEPDBUMM
    Likely outcomes (0 missions) — click to expand

    Based on 0 missions where this alarm fired in the last 90 days (for AVIONICS_A_VBAT_VOLTAGE_UNAVAILABLE) as of 2026-10-13

    Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.

    Background

    Section titled “Background”

    The battery terminal’s voltage reading is unavailable.

    Troubleshooting Steps

    Section titled “Troubleshooting Steps”
    1 action
    Replace the Power Distribution Board (PDB). See the UMM for steps.

    Did this guide help you get unblocked?

    Open suggestions

    There are no open suggestions.

    Open pull requests

    There are no open pull requests.

    Edit this page on GitHub
    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 1
      Commit fdb8ff2
    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. 2026-05-28 Susan Minne Bulk/mechanical change
      Remove redundant topic applicability banners
      Commit e561ad0
    6. 2026-05-10 Susan Minne Bulk/mechanical change
      Reviewed migrated topics. Edited as needed. Published.
      Commit 6199e3f
    7. 2026-05-09 Susan Minne Bulk/mechanical change
      Reviewed migrated docs and edited as needed. Changed to published.
      Commit 2dc36a3
    8. 2026-05-06 Gavin Edwards Bulk/mechanical change
      Remove redundant Engineer Owner table from topic body (#298)
      Commit 1619f07 PR #298
    9. 2026-05-04 Gavin Edwards Bulk/mechanical change
      Address Susan's review feedback on PR #241
      Commit e9ffe9d
    10. 2026-04-29 Gavin Edwards Bulk/mechanical change
      v2.1 batch 3: 45 new topics + 7 cross-link updates
      Commit 6bc166d
    11. 2026-04-23 Gavin Edwards Bulk/mechanical change
      Replace all topics with 210 v3-generated baseline content
      Commit 9b61a6e
    12. 2026-04-15 Gavin Edwards Bulk/mechanical change
      Categorize 373 regenerated topics into subdirectories; drop 15 meta pages
      Commit 9bdc40f
    13. 2026-04-15 Gavin Edwards Bulk/mechanical change
      Replace topic corpus: 388 LLM-regenerated topics (round 1)
      Commit f950bfa
    14. 2026-04-14 Gavin Edwards Bulk/mechanical change
      Tag all 427 topics draft with DO NOT USE warning admonition
      Commit 1783498
    15. 2026-04-08 Gavin Edwards Bulk/mechanical change
      Refactor: single TopicPage component replaces 5 individual imports
      Commit 49b5720
    16. 2026-04-07 Gavin Edwards Bulk/mechanical change
      Import 19 more topics, add FlowVisualizer to all topics
      Commit b2fafb6
    Baseline import
    Initial import into service_docs
    Imported by Gavin Edwards on 2026-04-07
    Flow visualizer, Suggest Change, PDF/traceability scaffolding, 10 more topics
    Commit fc94f27
    Suggest a change