# SDR P5CA0401117

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2004
- Submitted: July 12, 2004
- Operation: Air carrier
- Aircraft: N505MC
- Make and model: Boeing 747-2D3B
- Registry model: [Boeing 747-2D3B](https://openairdocs.org/model/boeing-747-2d3b) (OpenAirDocs)
- Aircraft serial: 21251
- Aircraft time: 86,682 hours, 19,015 cycles
- Engine: Ge CF650E2
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 73836219
- Part serial: KD8463870217
- Condition: Malfunctioned
- Location: Nr 1 Pylon
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0401117

## Discrepancy

DMI NR 32768, NR 1 PYLON VALVE INOPERATIVE, ALSO HIGH PRESSURE BLEED VALVE ON ENGINE NR 1.   REMOVAL AND REPLACEMENT.  REMOVED AND REPLACED PYLON VALVE DUE TO NOT CLOSING COMPLETELY , OPS CHECK AND LEAK CHECKS GOOD IAW MM 36-11-04.

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