# SDR ASAA2023022642101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2023
- Submitted: February 28, 2023
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41730
- Aircraft time: 38,307 hours, 12,231 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator
- Part number: 1074926
- Part serial: 5130C
- Condition: Faulty
- Location: #2 Engine
- Part time: 67,491 hours, 38,010 cycles
- Stage of operation: NR
- 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/ASAA2023022642101

## Discrepancy

FLT CREW REPORTS WITH ALL BLEED VLVS. (APU & #1 & #2 ENGS) R2 DUCT PRESSURE READS 20PSI ALL BLEEDS OFF. GROUNDED - YES. REMOVED AND REPLACED BLEED AIR REGULATOR REF B737-900 AMM 36-11-03 UP TO STEP 3.E.(6). PERFORM LEAK & OPS CHECK ON #2 ENGINE REF. B737-900 FIM 36-10 TASK 802 H. NO LEAK NOTED @ SENSE LINE, OPS CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.