# SDR DALA2025050803576

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2025
- Submitted: May 8, 2025
- Operation: Air carrier
- Aircraft: [N702TW](https://openairdocs.org/aircraft/N702TW), registered now
- Make and model: Boeing 757-2Q8
- Registry model: [Boeing 757-2Q8](https://openairdocs.org/model/boeing-757-2q8) (OpenAirDocs)
- Aircraft serial: 28162
- Aircraft time: 99,528 hours, 26,224 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Faulted
- Location: Zone 100
- Part time: 69,852 hours, 26,192 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: G, A, I
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025050803576

## Discrepancy

SHIP 6801 -ATB/PRES/DE- DUE TO CABIN ALTITUDE WARNING REQUIRING EMERGENCY DESCENT. OXYGEN MASKS MANUALLY DEPLOYED. CORRECTIVE ACTION: REPLACED SEALS AT RT TURBINE INLET DUCT. R/R CAB AIR REC OUTFLOW VALVE.

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