# SDR IPXA09B56182

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2009
- Submitted: June 1, 2009
- Operation: Air carrier
- Aircraft: [N572UP](https://openairdocs.org/aircraft/N572UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35669
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Condition: Malfunctioned
- Location: Bleed Air Sys
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA09B56182

## Discrepancy

INSPECTION TYPE:N/A DIVERSION - ENGINES NR 1 & NR 3 BLEEDS INOP AND LOSS OF ICING PROTECTION ON NR 3 ENGINE.  REPLACED AIR SUPPLY CONT & TEST UNIT PER MM 36-11-30-4.  REPLACED NR 1 ENG HP SHUT-OFF VALVE AS PER MM 36-11-05-4 & HP CONTROLLER AS PER MM 36-11-06-4.  PERFOMED OPS CHECK NORMAL.

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