# SDR ASAA2023080544436

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2023
- Submitted: August 7, 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: 3,314 hours, 951 cycles
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Pressure Valve
- Part number: 632160643
- Part serial: 3093
- Condition: Faulty
- Location: #2 Engine
- Part time: 3,314 hours, 951 cycles
- Stage of operation: DE
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023080544436

## Discrepancy

RT ENG BLEED CAUTION LT ILLUMINATED SOON AFTER TOP OF DESCENT @ APPROX FL290 AT THRUST IDLE. COMPLETED QRH PROCEDURES AND LIGHT REMAINED ON. GROUNDED - YES. STATUS MSG "BLEED PRSOV R" WITH MTX MSGS 36-00171 AND 36-11041. BLEED TRIP RESET. ELECTRICAL LRU - GROUND TEST PER AMM 36-00-00-710-801 "FAILED" ON MULTIPLE ATTEMPTS. REMOVED AND REPLACED RIGHT ENGINE PRSOV REF AMM 36-11-04. OPS + LEAK CHECK GOOD. BLEED LIGHT AND STATUS MESSAGE CLEARED. FAN COWLS AND T/RS OPENED AND CLOSED REF AMM TASK 71-11-04 AND 78-31-00. ETOPS GROUND VERIFICATION SUCCESSFUL.

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