# SDR UIEA2026090700857

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2026
- Submitted: September 9, 2026
- Operation: Air carrier
- Aircraft: [N498MC](https://openairdocs.org/aircraft/N498MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29259
- Aircraft time: 108,849 hours, 17,542 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Condition: Broken
- 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/UIEA2026090700857

## Discrepancy

EICAS BLEED 4 ON TAKE OFF ROLL.  DURING INSPECTION OF HPSOV, FOUND TERMINAL NR 1 ON HPSOV BROKEN. SPLICED NEW TERMINAL IAW SWPM SECTION 20-30. OPS CHECK &  IDLE RUN GOOD IAW AMM 36-11-05/501 AND 71-00-00.

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