# SDR DALA2026080404493

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2026
- Submitted: August 5, 2026
- Operation: Air carrier
- Aircraft: [N955DZ](https://openairdocs.org/aircraft/N955DZ), registered now
- Make and model: Boeing 737-9GPER
- Registry model: [Boeing 737-9GPER](https://openairdocs.org/model/boeing-737-9gper) (OpenAirDocs)
- Aircraft serial: 38743
- Aircraft time: 30,168 hours, 17,316 cycles
- Engine: Cfmint CFM567B27
- Engine time: 32,410 hours, 15,767 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Check Valve
- Part number: 32022221
- Part serial: 16864
- Condition: Worn
- Location: Nr 2 Engine
- Part time: 32,410 hours, 15,767 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/DALA2026080404493

## Discrepancy

NR 2 ENGINE 5TH STAGE CHECK VALVE IS WORN.   REMOVED AND REPLACED #2 ENGINE 5TH STAGE CHECK IAW B737 AMM 36- 11-02. LEAK CHECK GOOD. (1737142) AIRCRAFT WAS GROUNDED.

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