# SDR CALA2026021713840

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2026
- Submitted: February 17, 2026
- Operation: Air carrier
- Aircraft: [N77543](https://openairdocs.org/aircraft/N77543), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64474
- Aircraft time: 11,269 hours, 3,740 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Window
- Condition: Leaking
- Location: Zone 200
- Stage of operation: CL
- 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/CALA2026021713840

## Discrepancy

PRESSURE LEAK ON CA SIDE WINDOW. LOUD AT 4.5 PSID FOUND DRAIN HOE IN BETWEEN WINDOW AND JAM. PROBABLE CAUSE OF LEAK. CORRECTED HOSE PRESSURIZED AND FOUND NO LEAKS IAW AMM 05-51-91-790-801.

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