Service difficulty report · Control Unit · Boeing 737890

Difficulty date
September 20, 2017
Submitted
September 21, 2017
Operation
Air carrier
Aircraft
N588AS
Make and model
Boeing 737890
Aircraft serial
35685
Aircraft time
37,726 hours, 11,454 cycles
Part
Control Unit
Part number
115195214
Part serial
115195203198
Condition
Failed
Location
Nr 1 Idg
Part time
37,723 hours, 11,451 cycles
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

WHILE TROUBLESHOOTING THE NR 1 IDG, SWITCHING BUSSES BACK AND FORTH CAUSED P5-13 ELEC LIGHT TO ILLUMINATE. SHOWS SPCU INOPERATIVE FAULT. ACFT GROUNDED. REMOVED & REPLACED THE SPCU IAW AMM 24-34-11. OPS NORMAL.