# SDR ASAA2015120714146

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2015
- Submitted: December 11, 2015
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 33,467 hours, 10,008 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7797 · Engine Indicating System Wiring](https://openairdocs.org/jasc/7797)
- Part: Connector
- Condition: Disengaged
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015120714146

## Discrepancy

DURING ACCOMPLISHMENT OF TC 78273000.  NR 1 ENGINE SHOWED FAULT CODE 77-10851, BOTTOM RT EGT SIGNAL OUT OF RANGE T495S2.  SHOWED ON RECENT FAULTS LEG 1, 2, 3.  FAULT HISTORY ON LEGS 1-9.  ACFT GROUNDED.   ACCOMPLISHED TROUBLESHOOTING IAW FIM 77-21, TASK 802.   FOUND NR 1 ENGINE T49.5 S2 PROBE HAD NO DATA INTO THE EEC.  INSPECTED CONNECTORS AT J9, CJ9 AND T49.5S2. FOUND CONNECTOR AT T49.4S2 NOT FULLY ENGAGED.  CLEANED CONNECTORS IAW AMM 70-70-01-200-801-F00.  CHECKED HARNESSES FOR CONTINUITY FROM DP909 - DP901 & FROM DP911 - DP913.  CHECKED NORMAL.  PERFORMED T49.5 PROBE & EGT SYSTEM INSPECTION IAW AMM 77-21-01-200-801-F00.  CHECKED NORMAL.  CHECKED MDCU FOR T49.5 TEMPERATURES.  ALL TEMPS WITHIN NORMAL RANGE.

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