# SDR UALA2013032501849

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2013
- Submitted: March 27, 2013
- Operation: Air carrier
- Aircraft: [N798UA](https://openairdocs.org/aircraft/N798UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26928
- Aircraft time: 66,540 hours, 9,487 cycles
- Engine: Pwa PW40903
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Control Valve
- Part number: 32908881
- Part serial: 681
- Condition: Failed
- Location: Cargo Heat
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013032501849

## Discrepancy

CARGO HEAT VALVE AFT FAILURE OF AFT CARGO HEAT SHUTOFF VALVE OR (SOV) OR TEMP CONTROL VALVE (TCV).  INTERMITTENT STATUS MSG-2112031 INACTV ER MODE. REPLACED AFT CARGO TEMP.  CONTROL VALVE PER AMM.

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