# SDR UIEA2026072900665

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2026
- Submitted: July 29, 2026
- Operation: Air carrier
- Aircraft: [N499MC](https://openairdocs.org/aircraft/N499MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29260
- Aircraft time: 105,491 hours, 17,953 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Shutoff Valve
- Part number: 80217011
- Part serial: 890749
- Condition: Faulted
- Location: Bleed Sys
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026072900665

## Discrepancy

DURING TAKEOFF ROLL, BLEED 2 ADVISORY MESSAGE CAME ON.  TRANSFER TO DMI 256295 PER MEL 36-11-03 CATC DUE DATE 02AUG26.  REMOVED AND REPLACE HPSOV IAW B747 AMM 36-11-03 AND OPS CHECK GOOD.

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