Service difficulty report · Wire Harness · Boeing 737890

Difficulty date
March 28, 2010
Submitted
March 30, 2010
Operation
Air carrier
Aircraft
N579AS
Make and model
Boeing 737890
Aircraft serial
35187
Aircraft time
11,688 hours, 3,463 cycles
Engine
Cfmint CFM567B27
Part
Wire Harness
Part number
3250254010
Condition
Faulty
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 TREND DATA CONTINUES TO SHOW ERRORS INDICATIVE OF EGT INDICATION SYSTEM ANOMALIES. ALL OTHER PARAMETERS ARE NORMAL. COCKPIT INDICATION IS STILL WITHIN RANGE. REPLACED LOWER LEFT EGT PROBE T495S3 AND PROBE T495S1 PER MM 77 21 01 000 801 / MM 77 21 01 400 801, NO HELP. REPLACED CJ9 AND CJ10 HARNESSES PER MM 73 21 06 000 803 / MM 73 21 06 400 803, READINGS NOW WITHIN LIMITS.