# SDR CALA2017072902428

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2017
- Submitted: July 30, 2017
- Operation: Air carrier
- Aircraft: [N87512](https://openairdocs.org/aircraft/N87512), registered now
- Make and model: Boeing 737824
- Aircraft serial: 33458
- Aircraft time: 31,438 hours, 10,947 cycles
- System (JASC): [7797 · Engine Indicating System Wiring](https://openairdocs.org/jasc/7797)
- Part: Wire Harness
- Part number: 3250254020
- Condition: Faulty
- Location: Nr 2 Engine
- 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/CALA2017072902428

## Discrepancy

ENGINE OVERTEMPERATURE (EXCEPT STARTING) EGT OVER AMBER BAND LIMIT, NO SURGE/STALL ENGINE 2 ON DEPARTURE EGT WENT TO 950 RED BOX FOR 10 SECS. TROUBLESHOT PER FIM 77-21-00-810-801-FOO. NR 2 ENGINE TOP RIGHT EGT SIGNAL OUT OF RANGE. REMOVED AND REPLACED NR 2 ENGINE TOP RIGHT THERMOCOUPLE PROBE PER AMM 77-21-01-400-801-FOO.  TROUBLE SHOT PER FIM 77-21-00-810-803-FOO. BOTTOM LEFT EGT SIGNAL OUT OF RANGE. REMOVED AND REPLACED NR 2 ENGINE BOTTOM LEFT THERMOCOUPLE PROBE PER AMM 77-21-01-400-801-FOO. HARNESS FAULTY. REMOVED AND REPLACED NR 2 ENGINE CORE HARNESS CJ10 PER AMM 73-21-06 SUBTASK 73-21-06-420-008-FOO. ALL OPS CKS GOOD.

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