Service difficulty report · Wire Harness · Boeing 737490

Difficulty date
June 19, 2015
Submitted
June 19, 2015
Operation
Air carrier
Aircraft
N569AS
Make and model
Boeing 737490
Aircraft serial
35184
Aircraft time
31,600 hours, 9,841 cycles
Engine
Cfmint CFM567B27
Part
Wire Harness
Part number
3250150010
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

WHILE ACCOMPLISHING TC 78273000, FOUND THE FOLLOWING MAINTAINCE MESSAGES: MSG 75-10362 HPTACC POSITION SIGNAL OUT OF RANGE FOR THE NR 2 ENGINE, MSG 75-30412 HPTACC POSITION SIGNALS DISAGREE, ACFT GROUNDED. ACCOMPLISHED EEC BITE TEST RECENT FAULT ON NR 2 ENGINE AND FOUND FAULT 75-20412, 75-10762 AND 75-10412. ALSO ACCOMPLISHED EEC BITE TEST REF AMM 73-21-00-700-804-F00. NO EEC TEST FAULT. PERFORMED FIM TASK 75-34/807, F1-3 AND G1-2 RESISTANCE CHECK RESISTANCE IS CHECK GOOD. AS A PRECAUTION REPLACED MW0303 HARNESS REF AMM 71-51-00/401. ACCOMPLISHED EEC TEST REF AMM 73-21-00-700-804-F00 NO EEC TEST FAULT, ALSO ACCOMPLISHED TEST 12 ACTUATORS, TEST REF AMM 71-00-00-700-807-F00, TEST PASSED WITH NO MAINTENANCE MESSAGE.