# SDR ASAA2022063038913

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2022
- Submitted: July 5, 2022
- Operation: Air carrier
- Aircraft: [N495AS](https://openairdocs.org/aircraft/N495AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41728
- Aircraft time: 23,361 hours, 7,305 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32145526
- Part serial: 17609
- Condition: Leaking
- Location: #2 Engine
- Part time: 23,361 hours, 7,305 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022063038913

## Discrepancy

AFTER TAKEOFF, RIGHT DUCT PRESSURE 10 LEFT DUCT PRESSURE 40. REMAINED THAT WAY THROUGHOUT CLIMB TO CRUISE ALTITUDE. GROUNDED - YES. AIR TURNBACK - REMOVED AND REPLACED #2 ENG PRSOV OPS AND LEAK CHECKED PER B737-900 AMM 36-11-04-400-801 (REF ASA LG PG 60489949). ACCOMPLISHED BLEED AIR CROSSOVER OPERATION TEST PER AMM 36-11-00-710-801. RIGHT DUCT PRESSURE NORMAL.

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