# SDR 9617366636

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N636US](https://openairdocs.org/aircraft/N636US), registered now
- Make and model: Boeing 747251B
- Aircraft serial: 23547
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Condition: Failed
- Location: Nr 4 Engine
- Stage of operation: TO
- Nature of condition: J, M
- Precautionary procedure: C, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9617366636

## Discrepancy

DURING TAKEOFF (AMS), THE NR 4 ENGINE EGT WARNING AND OVERHEAT LIGHT ILLUMINATED FOLLOWED BY A NR 4 ENGINE FIRE WARNING.  ABORTED TAKEOFF.  REPLACED THE HIGH STAGE BLEED VALVE AND CONTROLLER.  OPERATIONAL CHECK GOOD.

---
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.