# SDR UIEA2015102600591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2015
- Submitted: October 27, 2015
- Operation: Air carrier
- Aircraft: [N492MC](https://openairdocs.org/aircraft/N492MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29253
- Aircraft time: 73,013 hours, 12,628 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Condition: Faulty
- Location: Bleed Air 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/UIEA2015102600591

## Discrepancy

BLEED NR 1, EICAS MSG ON BEGINNING OF TAKEOFF ROLL, & DISAPPEARED WHILE CLEARING RNWY, REJECTED TAKEOFF.  AFTERWARD, STS MSG, BLEED HP ENG NR 1, THEN AGAIN DURING CLIMB OUT, BLEED NR 1 EICAS MSG AGAIN.  PERFORMED NNC DEACTIVATED NR 1 ENG, HPSOV DEFERRED IAW 36-11-03.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.