SDR ASAA2018102026584

Service difficulty report · Connector · Boeing 737890

Difficulty date: October 20, 2018
Submitted: October 24, 2018
Operation: Air carrier
Aircraft: N581AS
Make and model: Boeing 737890
Aircraft serial: 35188
Aircraft time: 43,825 hours, 13,159 cycles
System (JASC): 7397 · Engine Fuel System Wiring
Part: Connector
Condition: Dirty
Location: Nr 1 Engine
Stage of operation: IN
How discovered: O
Nature of condition: J
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 1 ENGINE FMC/CDU SHOWS FAULT 75-10831, T3 SIGNAL IS OUT OF RANGE-LONG TIME FAULT. GROUNDED - YES. PER B737-800 FIM 75-33 TASK 802 INITIAL EVALUATION SHOWS FAULT 75-10831 T3 SIGNAL IS OUT OF RANGE. LONG TIME FAULT PRE CLEANING READINGS, T3 CH B: 109.62. T3 CH A: 479.75. CLEANED CH A + B ELECTRICAL CONNECTORS AT T3 PER B737-800 AMM 70-70-01.POST CLEANING READINGS, T3 CH B: 50.37. T3 CH A: 50.75. EEC TEST PASSED NO FAULTS. REPAIR CONFIRMATION SUCCESSFUL.