SDR ASAA2016082117775

Service difficulty report · Sensor · Boeing 737890

Difficulty date: August 21, 2016
Submitted: August 25, 2016
Operation: Air carrier
Aircraft: N594AS
Make and model: Boeing 737890
Aircraft serial: 35191
Aircraft time: 32,380 hours, 9,801 cycles
Engine: Cfmint CFM567B27B3
System (JASC): 7320 · Fuel Controlling System
Part: Sensor
Part number: RP23600
Condition: Failed
Location: Nr 1 Engine
Stage of operation: IN
How discovered: O
Nature of condition: O
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 SHORT TIME FAULT 75-30801, T25 SIGNALS DISAGREE, REF: T/C 78273000. ACFT GROUNDED. ACCOMPLISHED NR 1 ENGINE EEC BITE AND FIM 75-33 TASK 801, T25 SIGNAL OUT OF RANGE FAULT ISOLATION, FLIGHT FAULT HISTORY SHOWS ALL 10 LEGS, 2 FAULTS, 1, 75-30801-T25 SIGNAL DISAGREE, 75-10821-T25 OUT OF RANGE. R & R T25 SENSOR, REF AMM TASK 73-21-02, GROUND FUNCTIONAL CHECK NORMAL, REF AMM TASK 73-21-00-700-804-F00.