# SDR NACA202502040001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2025
- Submitted: February 11, 2025
- Operation: Air carrier
- Aircraft: [N563NC](https://openairdocs.org/aircraft/N563NC), registered now
- Make and model: Boeing 767-3BG
- Registry model: [Boeing 767-3BG](https://openairdocs.org/model/boeing-767-3bg) (OpenAirDocs)
- Aircraft serial: 30563
- Aircraft time: 85,469 hours, 21,854 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Malfunctioned
- Location: Zone 100
- Stage of operation: NR
- 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/NACA202502040001

## Discrepancy

OUTFLOW VALVE INDICATING HALF OPEN DURING WHOLE FLIGHT AND DIFF PRESSURE INDICATING HALFWAY ON THE YELLOW LINE, VERY CLOSE TO MAX DIFF PRESS. PERFORMED FIM PROCEDURES 21-31 FT 803 NO FAULTS FOUND.

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