CPU_OVER_TEMP
Applicable alarms (2)
Likely outcomes — click to expand
Based on 3 missions where this alarm fired in the last
90 days
(for CPU_OVER_TEMP) as of 2026-10-13
Grounding vs discrepancy (of 2 ZERP issues filed on these missions)
Frequently replaced parts
| Part | P/N | Removals |
|---|---|---|
| FLIGHT COMPUTER ASSY, ZIP, P2 | 20994 | 8 |
Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.
Background
Section titled “Background”This alarm is triggered when the processor on the Zip or Droid is overheating.
Troubleshooting Steps
Section titled “Troubleshooting Steps”graph TD
is-this-the-first-time-that-the-alarm{"<small><b>Step 1</b></small><br/>Question: Is this the first time that the alarm..."}
wait-10-minutes["<small><b>Step 2</b></small><br/>Action: Wait 10 minutes"]
has-the-alarm-cleared{"<small><b>Step 3</b></small><br/>Question: Has the alarm cleared?"}
return-aircraft-to-service("<small><b>Step 4</b></small><br/>Reference: Return Aircraft to service")
if-the-som-blowers-are-not-spinning-o["<small><b>Step 5</b></small><br/>Action: If the SOM blowers are not spinning, ..."]
if-the-som-blowers-are-spinning-at-th["<small><b>Step 6</b></small><br/>Action: If the SOM blowers are spinning at th..."]
if-the-som-blowers-are-not-spinning-o-2["<small><b>Step 7</b></small><br/>Action: If the SOM blowers are not spinning, ..."]
if-the-som-blowers-are-spinning-at-th-2["<small><b>Step 8</b></small><br/>Action: If the SOM blowers are spinning at th..."]
is-this-the-first-time-that-the-alarm -->|Yes| wait-10-minutes
is-this-the-first-time-that-the-alarm -->|No| if-the-som-blowers-are-not-spinning-o-2
wait-10-minutes --> has-the-alarm-cleared
has-the-alarm-cleared -->|Yes| return-aircraft-to-service
has-the-alarm-cleared -->|No| if-the-som-blowers-are-not-spinning-o
if-the-som-blowers-are-not-spinning-o --> if-the-som-blowers-are-spinning-at-th
if-the-som-blowers-are-not-spinning-o-2 --> if-the-som-blowers-are-spinning-at-th-2
style is-this-the-first-time-that-the-alarm fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style wait-10-minutes fill:#dcfce7,stroke:#22c55e,color:#14532d
style has-the-alarm-cleared fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style return-aircraft-to-service fill:#f3e8ff,stroke:#a855f7,color:#581c87
style if-the-som-blowers-are-not-spinning-o fill:#dcfce7,stroke:#22c55e,color:#14532d
style if-the-som-blowers-are-spinning-at-th fill:#dcfce7,stroke:#22c55e,color:#14532d
style if-the-som-blowers-are-not-spinning-o-2 fill:#dcfce7,stroke:#22c55e,color:#14532d
style if-the-som-blowers-are-spinning-at-th-2 fill:#dcfce7,stroke:#22c55e,color:#14532d Hover or focus a block to preview it. Select the block to keep the preview open.
- UMM: Remove Flight Compute Assembly (FCA)
- UMM: Install Flight Compute Assembly (FCA)
- UMM: Remove Flight Compute Assembly (FCA)
- UMM: Install Flight Compute Assembly (FCA)
Resolution note
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