# SDR ASAA2023050443153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2023
- Submitted: May 8, 2023
- Operation: Air carrier
- Aircraft: [N948AK](https://openairdocs.org/aircraft/N948AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44090
- Aircraft time: 2,288 hours, 656 cycles
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Valve
- Part number: 632920682
- Part serial: 3075
- Condition: Unknown
- Location: #2 Engine
- Part time: 2,288 hours, 656 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023050443153

## Discrepancy

AFTER X-BLEED START ON ENG #2 AND ENG #2 STARTER CUTOUT LIGHT EXTINGUISHED, THE L BLEED LIGHT AND L ENG ANTI ICE LIGHT CAME ON. DID QRH FOR BLEED LIGHT AND PRESSED TRIP RESET L BLEED LIGHT WENT OUT AND L ENG ANTI ICE LIGHT STAYED ON. GROUNDED - YES. CHECKED AND FOUND MANTENANCE MESSAGE 36-11020 ENGINE 1 HPSOV IS NOT IN COMMANDED POSITION. ACCOMPLISHED B737-9 AMM TASK 36-11-07-000-801. INSTALLED NEW HPSOV ON LEFT ENG PER AMM 36-11-07-400-801

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