# SDR SWAA2018052122118

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2018
- Submitted: May 21, 2018
- Operation: Air carrier
- Aircraft: N732SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27864
- Aircraft time: 66,951 hours, 39,085 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 10623143
- Part serial: 08101949
- Condition: Faulty
- Location: Ac Bay
- Stage of operation: UK
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2018052122118

## Discrepancy

DECLARED EMERGENCY, AUTO FAIL & ALT ON PRES PANEL ILLUMINATED AT 380 MSL AFTER A FEW SECONDS ALT LIGHT WENT OUT SWITCHED TO MANUAL AUT FLOW VALVE FULL CLOSED CABIN STILL CONTINUED TO CLIMB; O2 MASKS DEPLOYED AFTER OPENING, PAX O2 SWITCH NOTED DASHED LINES ON FLT&LND ALT WINDOWS. R&R CABIN OUTFLOW VALVE PER MM.

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