Service difficulty report · Control Unit · Boeing 737932ER

Difficulty date
May 9, 2018
Submitted
May 15, 2018
Operation
Air carrier
Aircraft
N866DN
Make and model
Boeing 737932ER
Aircraft serial
31977
Aircraft time
5,572 hours, 1,852 cycles
Part
Control Unit
Condition
Failed
Location
Nr 3
Stage of operation
TX
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

AFTER LANDING, THE TR UNIT LIGHT ILLUMINATED ON THE OVERHEAD ELECTRICAL PANEL. DISCOVERED AFTER BLOCK-IN, THE TR3 CIRCUIT BREAKER HAD TRIPPED AND A BRIEF ELECTRICAL ODOR AT BLOCK-IN. TROUBLESHOT IAW FIM 24-31-00-810-826. GCU NR 1 SHOWING FAULT LIGHT BTB FAULT WIP 743664. REPLACED THE T/R 3 IAW 24-32-11. OPS NORMAL.