# SDR DALA201910316329

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2019
- Submitted: October 31, 2019
- Operation: Air carrier
- Aircraft: [N823DX](https://openairdocs.org/aircraft/N823DX), registered now
- Make and model: Boeing 757-26D
- Registry model: [Boeing 757-26D](https://openairdocs.org/model/boeing-757-26d) (OpenAirDocs)
- Aircraft serial: 33967
- Aircraft time: 37,502 hours, 19,532 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Obstructed
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: C
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA201910316329

## Discrepancy

SHIP 6823 -ATB/PRES - DUE TO LOSS OF CABIN PRESSURE FL290 AND AFTER EMERGENCY DESCENT USED MAN PRESS. MASK DID NOT DEPLOY. CORRECTIVE ACTION: FOUND INSULATION BLANKET HANGING OUT OF OUT FLOW VALVE, RE-SECURED BLANKET. FOUND BOTH PACK BAY SUPPLY DUCTS LEAKING AT CLAMPS, RE-SECURED CLAMPS. PERFORMED SINGLE PACK CONFIDENCE CHECK AND EXCESSIVE CABIN LEAKAGE CHECK NO FAULTS.

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