Service difficulty report · Control Unit · Boeing 777224

Difficulty date
February 4, 2020
Submitted
February 9, 2020
Operation
Air carrier
Aircraft
N77006
Make and model
Boeing 777224
Aircraft serial
29476
Aircraft time
103,567 hours, 10,355 cycles
Part
Control Unit
Part number
756603E
Condition
Faulted
Location
Generator
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

SUPPORT TASK: MSG 24-30003 AGCU INTERNAL FAULT REFER TO NR LP 9131304. TT: 1704070 MFG P/N(OFF): 756603E MFG S/N(OFF): 0976 ADD EMP:V917662 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1704070 SN OFF 0976 UNIT, GENERATOR OFF 27-2421-9-0001 0976 ON 25-2422-9-0002 0841 UPDATE SDR STATUS SHOULD BE IDT INSPECTED BY HX215617. FIM 24-30003 PERFORMED FOUND CONNECTOR DM24003A DIN 11 WIRE INSU LATION JACKET MISSING AND CIRCUIT OPEN. CONNECTOR DM24003A RE-TERMINATED, I/R CHK RESULT NORMAL AND AGCU REPLACED AS PER AM M 24-22-02, WDM 24-21-31. ACGU INSTALLATION TEST RESULT NORMAL A S PER AMM 24-22-02, FORM 44-0008 STEP 1-4 ACCOMPLISHED.