# SDR UIEA200800163

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2008
- Submitted: May 5, 2008
- Operation: Air carrier
- Aircraft: [N528MC](https://openairdocs.org/aircraft/N528MC), registered now
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 22472
- Aircraft time: 82,935 hours, 16,587 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator Valve
- Part number: 8988061
- Part serial: P696
- Condition: Leaking
- Stage of operation: TO
- 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/UIEA200800163

## Discrepancy

NR 1 ENGINE FULL POWER TAKEOFF ON CLIMB-OUT BOTH A/B LOOPS REACHED 3.0.  AFTER POWER REDUCTION BOTH LOOPS CAME BACK DOWN TO 2.0.  REST OF FLIGHT WAS OK.  OPENED COWL AND FOUND LEAKING PRV.  REPLACED THE PRV IAW AMM 36-11-13.  OPS AND LEAK CHECKED OK.

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