# SDR UIEA2021012500113

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2021
- Submitted: January 28, 2021
- Operation: Air carrier
- Aircraft: [N1181A](https://openairdocs.org/aircraft/N1181A), registered now
- Make and model: Boeing 767-3Y0
- Registry model: [Boeing 767-3Y0](https://openairdocs.org/model/boeing-767-3y0) (OpenAirDocs)
- Aircraft serial: 26206
- Aircraft time: 89,304 hours, 22,459 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Condition: Inoperative
- Location: Pass Cabin
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021012500113

## Discrepancy

AFT ZONE TEMP EICAS MESSAGE.  TRANSFERRED TO MDDR 141343, IAW MEL 21-61-01-02, CAT C.  PERFORMED BITE TEST, IAW FIM 21-60-60 FAULT TREE 806 FOUND TRIM VALVE TO BE AT FAULT.  ALSO OPC AFT TRIM VALVE MODULE, IAW AMM 21-61-07 CONFIRMED VALVE INOPERABLE.  WHILE PERFORMING GVI FOUND AFT TRIM VLV, CONNECTOR NOT SECURED.  SECURED CONNECTOR, OPERATIONS CHECK GOOD, IAW B767 21-64-01.  THIS CLEARS DMI 141343.

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