# SDR P5CA2012040100023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2012
- Submitted: April 1, 2012
- 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: 49,344 hours, 8,895 cycles
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Relief Valve
- Part number: 2860100101
- Part serial: 0922
- Condition: Faulty
- Location: Fuel System
- Stage of operation: CL
- How discovered: O
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2012040100023

## Discrepancy

NRT TOWER OBSERVED FLUID STREAMING FROM UNDER THE RIGHT WING.  NO NOTICEABLE REDUCTION IN FUEL, HYDRAULIC OR OIL QUANTITIES.  (DURING MAINTENANCE WALK AROUND THE RIGHT INBOARD FUEL PRESSURE RELIEF VALVE WAS FOUND TO BE OPEN SLIGHTLY.   REMOVED AND REPLACED THE FUEL PRESSURE RELIEF VALVE PER AMM 28-13-05).

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