# SDR UIEA2018112102673

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 20, 2018
- Submitted: November 27, 2018
- Operation: Air carrier
- Aircraft: [N1439A](https://openairdocs.org/aircraft/N1439A), registered now
- Make and model: Boeing 767-33A
- Registry model: [Boeing 767-33A](https://openairdocs.org/model/boeing-767-33a) (OpenAirDocs)
- Aircraft serial: 28495
- Aircraft time: 68,341 hours, 15,798 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3987865
- Part serial: 4778
- Condition: Inoperative
- Location: Cabin Temp
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2018112102673

## Discrepancy

AFT CABIN TEMP CONTROL INOP /    ( CABIN COMPT TEMP CONTROL SYSTEM / ALL CARGO CONFIGURATION )(<P>PLACED ON MDDR 103188</P><P>FOUND ZONE TRIM VALVE IN-OP. DOES NOT ROTATE. EVEN WITH MANUAL KNOB.NEEDS A TRIM VALVE P/N 398786-5<BR /></P><P>REF LOGPAGE 0974275 - REMOVED AND REPLACED TRIM AIR MODULATING VALVE AND PERFORMED SYSTEM TEST PER AMM 21-61-07; MDDR 103188 CLEARED AT THIS TIME.</P>)

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