Service difficulty report · Wire Harness · Boeing 737990ER

Difficulty date
October 28, 2019
Submitted
December 17, 2019
Operation
Air carrier
Aircraft
N481AS
Make and model
Boeing 737990ER
Aircraft serial
44106
Aircraft time
16,831 hours, 5,474 cycles
Engine
Cfmint CFM567B27E
Part
Wire Harness
Part number
3250435030
Condition
Damaged
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

WHILE ACCOMPLISHING T/C 78273000 FOUND #2 ENG FAULT, MSG # 75-20832, T3 SIGNAL OUT OF RANGE, LONG TIME FAULT DEFERRED PER T/C 78273000. GROUNDED - YES. DEFERRED 450 FLT HRS, REQ SECOND DEFERRAL C/N 28010481 INSTALLED DEFERRED PER T/C 78273000. PERFORMED B737-900 FIM 75-33 TASK 802 FAULT 75-20832 REMAINS CURRENT AND IN HISTORY. T3 SENSOR CHECKS GOOD. UPON INSPECTION FOUND HARNESS J10 RESISTANCE OUT OF LIMITS. REMOVED AND REPLACED ENG #2 J10 HARNESS PER B737-900 AMM 73-21-06. PERFORMED ALL FADEC SYSTEM TESTS WITH NO DEFECTS TO NOTE. PER AMM 73-21-00. PLACED AIRCRAFT BACK IN NORMAL CONFIGURATION. THIS CLEARS PLT.