# SDR USAASB04049

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2004
- Submitted: July 7, 2004
- Operation: Air carrier
- Aircraft: [N376US](https://openairdocs.org/aircraft/N376US), registered now
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 22955
- System (JASC): [7797 · Engine Indicating System Wiring](https://openairdocs.org/jasc/7797)
- Part: Wire Harness
- Part number: 6131508551
- Condition: Faulty
- Location: Nr 2 Engine Egt
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASB04049

## Discrepancy

PIT - FLT 991 - EN ROUTE FROM PHL TO DFW, SOUTH OF PIT, CREW REPORTED THE NR 2 ENGINE EGT SPIKED TO 1,000 DEGREES WITH THE RED OVERHEAT LIGHT ILLUMINATING.  ALL OTHER ENGINE INDICATIONS WERE NORMAL.  CREW REDUCED POWER ON THE NR 2 ENGINE AND THE LIGHT EXTINGUISHED.  FLIGHT DIVERTED TO PIT AND LANDED WITHOUT FURTHER INCIDENT.  AN EMERGENCY WAS DECLARED.  MAINTENANCE REMOVD AND REPLACED THE NR 2 ENGINE EGT CORE HARNESS DUE TO MEGGER TEST IRREGULARITIES.  RAN NR 2 ENGINE AT TAKEOFF POWER FOR SIX TO EIGHT MINUTES, THEN TAXIED AIRCRAFT AT HIGH POWER SETTING.  ALL CHECKED NORMAL PER MM 77-21-00. (M)

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