Service difficulty report · Circuit Breaker · Boeing 737990ER

Difficulty date
December 7, 2019
Submitted
December 10, 2019
Operation
Air carrier
Aircraft
N442AS
Make and model
Boeing 737990ER
Aircraft serial
43293
Aircraft time
23,789 hours, 7,696 cycles
Part
Circuit Breaker
Condition
Tripped
Location
Gcu
Stage of operation
TX
How discovered
9
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

ENG #1 LIGHT ON, ENG #2 DRIVE LIGHT OFF WITH ENGINES SHUT DOWN, BOTH FANS STATIONARY. LIGHTS CHECK GOOD. GROUNDED - YES. FOUND C/B GCU 2 F11 ON P6-4 PANEL POPPED. C/B EXAMINED, NO EVIDENCE OF ARCING OR BURNT CONTACTS. DISCONNECTED DP1206 ON IDG AND JUMPED PIN 5 AND 6. GEN 2 DRIVE LIGHT ILLUMINATES AND C/B REMAINS RESET. C/B PULLED AND DP1206 RE-CONNECTED. C/B RESET AND REMAINS RESET AND DRIVE LIGHT IS ILLUMINATED. P5-13 ELEC LIGHT CAME ON WITH C/B RESET BATTERY CHARGER FAULT. B737-900 FIM 24-31 TASK 829 FOLLOWED: BATTERY CHARGER HAS 2 GREEN LIGHTS. REPAIR CONFIRMATION GOOD AND MESSAGE ERASED. BPCU LOGGED EP DIST/BUS FAULT: RESETS WITH BITE REF FIM 24-41 TASK 801. GCU #2 SHOWS NO FAULTS. RAN #2 ENG. GROUND VERIFICATION OK.