# SDR UIEA2019012803044

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2019
- Submitted: January 28, 2019
- 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: 68,793 hours, 15,962 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Modulating Valve
- Part number: 3987865
- Part serial: 5563
- Condition: Faulty
- Location: Ac Bay
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019012803044

## Discrepancy

REMOVE AND REPLACE FWD ZONE TRIM AIR MODULATING VALVE PER MCC(<P>REMOVED AND REPLACED FWD ZONE TRIM AIR MODULATING VALVE PER MCC IAW AMM 21-61-07 AND OPS CHECK IS GOOD AT THIS TIME.</P>)

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