# SDR ASAA2023021241956

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2023
- Submitted: February 16, 2023
- Operation: Air carrier
- Aircraft: [N565AS](https://openairdocs.org/aircraft/N565AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 59,151 hours, 17,622 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 32022221
- Part serial: 5207
- Condition: Faulty
- Location: #1 Engine
- Part time: 7,926 hours, 2,320 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023021241956

## Discrepancy

FOLLOW UP TO REPORTS OF #1 ENGINE HUNG START. CHECK OF THE #2 ENGINE 5TH STAGE CHECK VALVE. GROUNDED - YES. REPLACED 5TH STAGE CK VALVE PER B737-800 AMM 36-11-02/401 WITH ALL NEW CLAMPS AND E-SEALS.

---
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.