SDR ASAA2018040324127

Service difficulty report · Sensor · Boeing 737990ER

Difficulty date: April 3, 2018
Submitted: April 6, 2018
Operation: Air carrier
Aircraft: N413AS
Make and model: Boeing 737990ER
Aircraft serial: 35205
Aircraft time: 20,230 hours, 6,594 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7320 · Fuel Controlling System
Part: Sensor
Part number: RP23600
Condition: Faulted
Location: Nr 2 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 2 ENGINE SHOWED A SHORT TERM FAULT 75-10802. THE T25 SIGNALS DISAGREE. ACFT GROUNDED. PERFORMED FIM 75-33 TASK 801. NO FAULTS. NR 2 ENGINE BITE TEST, RECENT FAULTS HAS CODE 75-10802, CH A, 75-20802 CH B, AND 75-10822. EEC, J9 AND J10 HARNESS PREVIOUSLY REPLACED. POSSIBLE CAUSE IAW FIM 75-33 TASK 801 IS THE PT25 SENSOR. R/R PT25 SENSOR IAW AMM 73-21-02. OPS TESTED GOOD.