SDR ASAA2018101526472

Service difficulty report · Sensor · Boeing 737890

Difficulty date: October 9, 2018
Submitted: November 21, 2018
Operation: Air carrier
Aircraft: N508AS
Make and model: Boeing 737890
Aircraft serial: 35691
Aircraft time: 39,201 hours, 11,776 cycles
System (JASC): 7320 · Fuel Controlling System
Part: Sensor
Part number: 8TC19AAN1
Part serial: FDT84096
Condition: Faulty
Location: Nr 2 Engine
Part time: 39,024 hours, 11,754 cycles
Stage of operation: IN
How discovered: O
Nature of condition: N
Precautionary procedure: K

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

What was found

WHILE ACCOMPLISHING T/C 78273000 FOUND ENG 2 LONG TIME FAULT MSG 75-20832 THE T3 SIGNAL IS OUT OF RANGE. GROUNDED - YES. PERFORMED TROUBLESHOOTING ON NR 2 ENGINE T3 CHANNEL B IAW FIM 75-38 TASK 802 SECTION F, STEP 1-4. NO DISCREPANCIES FOUND. REMOVED & REPLACED NR 2 ENGINE J/O HARNESS IAW AMM 73-21-06-400-802-F00. REMOVED & REPLACED NR 2 ENGINE T3 SENSOR IAW AMM 73-21-07-000-801-F00 OPS CHECK GOOD IAW AMM'S 73-21-00-700-804-F00, 73-21-00-700-808-F00, 73-21-00-700-809-F00, 77-31-00, 30-11-12-710-801 & 71-00-00 TEST 12.