# SDR ASAA2019071330057

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2019
- Submitted: July 15, 2019
- Operation: Air carrier
- Aircraft: [N532AS](https://openairdocs.org/aircraft/N532AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36346
- Aircraft time: 34,778 hours, 10,361 cycles
- System (JASC): [7397 · Engine Fuel System Wiring](https://openairdocs.org/jasc/7397)
- Part: Wire Harness
- Part number: 3250434020
- Condition: Defective
- Location: Nr 1 Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019071330057

## Discrepancy

#1 ENGINE TREND DATA SHOWS A SUDDEN SHIFT IN EGT HOT DAY MARGIN PREVIOUS MAINT CJ9 HARNESS AND S1 PROBE REPLACED. GROUNDED - YES. REMOVED AND REPLACED #1 J9 HARNESS REF AMM 73-21-06-400-803-F00, OPS NML REF AMM 73-21-00-700-802-F00. ACCOMPLISHED THE FOLLOWING TEST: EEC TEST, PASSED, NO FAULTS LOGGED. ACTUATOR TEST, TEST PASSED. EEC DISCRETES TEST, ALL PASSED REF PER SAME. TEMP MONITORING AFTER HARNESS CHANGE: S1- 23.37 S2- 20.50 S3- 20.64 S4- 27.71. GROUND VERTIFICATION SUCCESSFUL.

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