SDR ASAA2022051938419

Service difficulty report · Sensor · Boeing 737890

Difficulty date: May 19, 2022
Submitted: May 27, 2022
Operation: Air carrier
Aircraft: N518AS
Make and model: Boeing 737890
Aircraft serial: 35693
Aircraft time: 48,300 hours, 14,197 cycles
Engine: Cfmint CFM567B27
System (JASC): 7320 · Fuel Controlling System
Part: Sensor
Part number: RP23500
Part serial: EM4031645
Condition: Faulty
Location: #1 Engine
Part time: 41,991 hours, 12,306 cycles
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

ENGINE #1 FAULT CODE 73-30901, T12 SIGNALS DISAGREE. SHORT TIME. DEFERRED PER ASA T/C 78273000. GROUNDED - YES. ON DEFERRAL.

ENGINE #1 FAULT CODE 73-30901, T12 SIGNALS DISAGREE. SHORT TIME. DEFERRED PER ASA T/C 78273000. GROUNDED - YES. T12 SENSOR CHB PINS 1 TO 2 OPEN REF B737-800 FIM 73-28 TASK 801 TABLE 201. REPLACED T12 SENSOR, EEC TEST PASS MM 73-21-05. REPAIR CONFIRMATION SUCCESSFUL PER SAME.