# SDR UIEA2020031000424

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2020
- Submitted: March 16, 2020
- Operation: Air carrier
- Aircraft: [N1489A](https://openairdocs.org/aircraft/N1489A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 27206
- Aircraft time: 106,711 hours, 20,999 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020031000424

## Discrepancy

CABIN AFT ZONE TEMP MSG(<P>TRANSFERRED TO MDDR 125575 IAW DDG 21-61-04-02, CAT 'C', DUE 19MAR20. VERIFIED AFT ZONE TRIM VALVE CLOSED. DISCONNECTED AND STOWED. </P><P>LP 822586: PERFORMED OPS CHECK OF AFT CABIN ZONE TEMP SYSTEM IAW FIM 26-61 FAULT TREE. OPS CHECKED GOOD. NO FAULTS NOTED. THIS CLEARS MDDR 125575. PLACARDS REMOVED.</P>)

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