Service difficulty report · Sensor · Boeing 737990ER

Difficulty date
March 23, 2018
Submitted
April 6, 2018
Operation
Air carrier
Aircraft
N413AS
Make and model
Boeing 737990ER
Aircraft serial
35205
Aircraft time
20,103 hours, 6,560 cycles
Engine
Cfmint CFM567B27E
Part
Sensor
Part number
RP23600
Condition
Faulted
Location
Nr 2 Engine
Stage of operation
IN
How discovered
9
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

THE T25 SIGNAL IS OUT OF RANGE, LONG TIME FAULT FOUND DURING EEC BITE TEST. ACFT GROUNDED. PERFORMED FIM 75-33 TASK 801. NO FAULTS. NR 2 ENG 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 THE PT25 SENSOR FOR THE NR 2 ENGINE IAW AMM 73-21-02. OPS TESTED GOOD.