# SDR CALA2026052516522

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2026
- Submitted: May 25, 2026
- Operation: Air carrier
- Aircraft: [N37365](https://openairdocs.org/aircraft/N37365), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67630
- Aircraft time: 4,474 hours, 1,476 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 632160643
- Part serial: 5824
- Condition: Faulted
- Location: Nr 1 Eng
- Part time: 227 hours, 71 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026052516522

## Discrepancy

DUCT PRESSURE SPLIT OF 30 PSI. HIGHER ON LEFT SIDE. STARTED PRSOV REMOVAL REF AMM 36-11-04-000-801 UP TO AND INCLUDING STEP E.(4) REMOVED AND REPLACED NR 1 ENG PRSOV AS REQUIRED REF AMM 36-11-04, OPS. CHECK GOOD.  NO FAULTS FOUND AT THIS TIME. REEF AMM 36-00-00-730-801

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