# SDR UIEA2025090401161

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2025
- Submitted: September 8, 2025
- Operation: Air carrier
- Aircraft: [N452PA](https://openairdocs.org/aircraft/N452PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30810
- Aircraft time: 101,102 hours, 17,094 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Actuator
- Part number: 7242822
- Part serial: 98018704
- Condition: Faulted
- Location: Outflow Valve
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2025090401161

## Discrepancy

OUTFLOW VALVE R EICAS MSG.  REMOVED & REPLACED RT OUTFLOW VALVE ACTUATOR ASSY, RT ICU & DIODE IAW AMM 21-31-10/401, 21-31-07/401, SWPM 20-40, AIPC 21-31-01-01 & AIPC 21-31-10-01. OPS CHKD OK.

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