# SDR UIEA2021091702035

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2021
- Submitted: September 22, 2021
- Operation: Air carrier
- Aircraft: [N662GT](https://openairdocs.org/aircraft/N662GT), registered now
- Make and model: Boeing 767-31A
- Registry model: [Boeing 767-31A](https://openairdocs.org/model/boeing-767-31a) (OpenAirDocs)
- Aircraft serial: 27619
- Aircraft time: 15,925 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Hpc
- Part number: 77328915
- Part serial: 2018011824
- Condition: Unreliable
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021091702035

## Discrepancy

LEFT ENGINE HPSOV CLOSED AND OPEN SWITCHES DISAGREE EICAS MSG.(<P> IT WAS REPLACED THE CONTROLLER ASSY - HIGH PRESSURE IAW AMM 36-11-08-004-050-008.</P>)

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