Service difficulty report · Wire Harness · Boeing 737990ER

Difficulty date
July 4, 2016
Submitted
July 7, 2016
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
4,040 hours, 1,345 cycles
Engine
Cfmint CFM567B27E
Part
Wire Harness
Part number
3250435030
Condition
Failed
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

IAW TASK CARD 78273000, PERFORMED INTERROGATION TEST FOUND NR 2 ENGINE MESSAGE 75-10822. THE T25 SIGNAL IS OUT OF RANGE. ACFT GROUNDED. IAW FIM 75-33 T805, ACCOMPLISHED RESISTANCE CHECKS AT T25 SENSOR & DP0909 / DP1010. ALL CHECKED NORMAL. A & B CHANNEL RESISTANCE VALUES MATCH. REMOVED J10 HARNESS. INSTALLED J10 HARNESS, IAW AMM 73-21-06. ACCOMPLISHED FADEC SYSTEM TEST, ALL TESTS PASS, IAW AMM 73-21-00.