Service difficulty report · Wire Harness · Lear 45LEAR

Difficulty date
January 3, 2018
Submitted
February 2, 2018
Operation
Air carrier
Aircraft
N546DH
Make and model
Lear 45LEAR
Aircraft serial
45150
Aircraft time
6,347 hours, 4,502 cycles
Part
Wire Harness
Part number
30607572
Part serial
0025866DED25
Condition
Faulty
Location
Engine
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING FLIGHT, THE FLIGHT CREW HAD REPORTED SEVERAL TIMES THAT THE RIGHT ENGINE N2 INDICATIONS WERE ERRATIC AND FLUCTUATING. ATTEMPTS WERE MADE AFTER EACH REPORT TO CORRECT THIS DISCREPANCY. AFTER THE THIRD WRITE-UP TROUBLESHOOTING IDENTIFIED THAT THE ENGINE WIRING HARNESS WAS FAULTY. THE HARNESS WAS REMOVED AND REPLACED WITH NEW. FUNCTIONAL CHECKS WERE SATISFACTORY AND